126534065402 has 4 divisors (see below), whose sum is σ = 189801098106. Its totient is φ = 63267032700.

The previous prime is 126534065381. The next prime is 126534065417. The reversal of 126534065402 is 204560435621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204560435621 = 4493 ⋅45528697.

It can be written as a sum of positive squares in only one way, i.e., 123572637841 + 2961427561 = 351529^2 + 54419^2 .

It is a super-2 number, since 2×126534065402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31633516349 + ... + 31633516352.

Almost surely, 2^126534065402 is an apocalyptic number.

126534065402 is a deficient number, since it is larger than the sum of its proper divisors (63267032704).

126534065402 is an equidigital number, since it uses as much as digits as its factorization.

126534065402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63267032703.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 126534065402 in words is "one hundred twenty-six billion, five hundred thirty-four million, sixty-five thousand, four hundred two".