1201242133 has 8 divisors (see below), whose sum is σ = 1478451968. Its totient is φ = 950433264.

The previous prime is 1201242131. The next prime is 1201242143. The reversal of 1201242133 is 3312421021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201242133 - 2¹ = 1201242131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201242133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201242131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6600141 + ... + 6600322.

It is an arithmetic number, because the mean of its divisors is an integer number (184806496).

Almost surely, 2^1201242133 is an apocalyptic number.

1201242133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1201242133 is a deficient number, since it is larger than the sum of its proper divisors (277209835).

1201242133 is a wasteful number, since it uses less digits than its factorization.

1201242133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13200483.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1201242133 is about 34658.9401597914. The cubic root of 1201242133 is about 1063.0250992110.

Adding to 1201242133 its reverse (3312421021), we get a palindrome (4513663154).

It can be divided in two parts, 12012 and 42133, that added together give a palindrome (54145).

The spelling of 1201242133 in words is "one billion, two hundred one million, two hundred forty-two thousand, one hundred thirty-three".