1156401402 has 16 divisors (see below), whose sum is σ = 2490710880. Its totient is φ = 355815792.

The previous prime is 1156401377. The next prime is 1156401403. The reversal of 1156401402 is 2041046511.

It is a happy number.

1156401402 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1156401403) 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, 7412752 + ... + 7412907.

It is an arithmetic number, because the mean of its divisors is an integer number (155669430).

Almost surely, 2^1156401402 is an apocalyptic number.

1156401402 is an abundant number, since it is smaller than the sum of its proper divisors (1334309478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1156401402 is a wasteful number, since it uses less digits than its factorization.

1156401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825677.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1156401402 is about 34005.9024582498. The cubic root of 1156401402 is about 1049.6299230949.

Adding to 1156401402 its reverse (2041046511), we get a palindrome (3197447913).

The spelling of 1156401402 in words is "one billion, one hundred fifty-six million, four hundred one thousand, four hundred two".