126401402 has 4 divisors (see below), whose sum is σ = 189602106. Its totient is φ = 63200700.

The previous prime is 126401393. The next prime is 126401411. The reversal of 126401402 is 204104621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (126401393) and next prime (126401411).

It can be written as a sum of positive squares in only one way, i.e., 82828201 + 43573201 = 9101^2 + 6601^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31600349 + ... + 31600352.

Almost surely, 2^126401402 is an apocalyptic number.

126401402 is a deficient number, since it is larger than the sum of its proper divisors (63200704).

126401402 is an equidigital number, since it uses as much as digits as its factorization.

126401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63200703.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 126401402 is about 11242.8378090231. The cubic root of 126401402 is about 501.8615963164.

The spelling of 126401402 in words is "one hundred twenty-six million, four hundred one thousand, four hundred two".