1202156402 has 16 divisors (see below), whose sum is σ = 1834329024. Its totient is φ = 590730000.

The previous prime is 1202156393. The next prime is 1202156407. The reversal of 1202156402 is 2046512021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1202156407) 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, 173627 + ... + 180417.

It is an arithmetic number, because the mean of its divisors is an integer number (114645564).

Almost surely, 2^1202156402 is an apocalyptic number.

1202156402 is a deficient number, since it is larger than the sum of its proper divisors (632172622).

1202156402 is a wasteful number, since it uses less digits than its factorization.

1202156402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8305.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1202156402 is about 34672.1271628956. The cubic root of 1202156402 is about 1063.2947213524.

Adding to 1202156402 its reverse (2046512021), we get a palindrome (3248668423).

The spelling of 1202156402 in words is "one billion, two hundred two million, one hundred fifty-six thousand, four hundred two".