1262138217402 has 16 divisors (see below), whose sum is σ = 2524296500640. Its totient is φ = 420709394832.

The previous prime is 1262138217397. The next prime is 1262138217437. The reversal of 1262138217402 is 2047128312621.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54613 + ... + 1589735.

It is an arithmetic number, because the mean of its divisors is an integer number (157768531290).

Almost surely, 2^{1262138217402} is an apocalyptic number.

1262138217402 is an abundant number, since it is smaller than the sum of its proper divisors (1262158283238).

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

1262138217402 is a wasteful number, since it uses less digits than its factorization.

1262138217402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672157.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 1262138217402 in words is "one trillion, two hundred sixty-two billion, one hundred thirty-eight million, two hundred seventeen thousand, four hundred two".