1202142061 has 4 divisors (see below), whose sum is σ = 1202215612. Its totient is φ = 1202068512.

The previous prime is 1202142059. The next prime is 1202142079. The reversal of 1202142061 is 1602412021.

1202142061 is a nontrivial binomial coefficient, being equal to C(49034, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 246961225 + 955180836 = 15715^2 + 30906^2 .

It is a 3-Lehmer number, since φ(1202142061) divides (1202142061-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1202142061 - 2¹ = 1202142059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202142001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 49033.

It is an arithmetic number, because the mean of its divisors is an integer number (300553903).

It is a Poulet number, since it divides 2^1202142060-1.

Almost surely, 2^1202142061 is an apocalyptic number.

1202142061 is the 49033-rd triangular number and also the 24517-th hexagonal number.

1202142061 is the 16345-th centered nonagonal number.

It is an amenable number.

1202142061 is a deficient number, since it is larger than the sum of its proper divisors (73551).

1202142061 is an equidigital number, since it uses as much as digits as its factorization.

1202142061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73550.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1202142061 is about 34671.9203535080. The cubic root of 1202142061 is about 1063.2904931810.

Adding to 1202142061 its reverse (1602412021), we get a palindrome (2804554082).

The spelling of 1202142061 in words is "one billion, two hundred two million, one hundred forty-two thousand, sixty-one".