1264106402 has 32 divisors (see below), whose sum is σ = 2062101888. Its totient is φ = 577725696.

The previous prime is 1264106401. The next prime is 1264106429. The reversal of 1264106402 is 2046014621.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1264106401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131418 + ... + 2132010.

It is an arithmetic number, because the mean of its divisors is an integer number (64440684).

Almost surely, 2^1264106402 is an apocalyptic number.

1264106402 is a deficient number, since it is larger than the sum of its proper divisors (797995486).

1264106402 is a wasteful number, since it uses less digits than its factorization.

1264106402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1264106402 is about 35554.2740328079. The cubic root of 1264106402 is about 1081.2543730118.

The spelling of 1264106402 in words is "one billion, two hundred sixty-four million, one hundred six thousand, four hundred two".