1202173442 has 4 divisors (see below), whose sum is σ = 1803260166. Its totient is φ = 601086720.

The previous prime is 1202173409. The next prime is 1202173447. The reversal of 1202173442 is 2443712021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443712021 = 2767 ⋅883163.

It can be written as a sum of positive squares in only one way, i.e., 945501001 + 256672441 = 30749^2 + 16021^2 .

It is not an unprimeable number, because it can be changed into a prime (1202173447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300543359 + ... + 300543362.

Almost surely, 2^1202173442 is an apocalyptic number.

1202173442 is a deficient number, since it is larger than the sum of its proper divisors (601086724).

1202173442 is an equidigital number, since it uses as much as digits as its factorization.

1202173442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601086723.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1202173442 is about 34672.3728925495. The cubic root of 1202173442 is about 1063.2997452291.

Adding to 1202173442 its reverse (2443712021), we get a palindrome (3645885463).

The spelling of 1202173442 in words is "one billion, two hundred two million, one hundred seventy-three thousand, four hundred forty-two".