126263402 has 4 divisors (see below), whose sum is σ = 189395106. Its totient is φ = 63131700.

The previous prime is 126263393. The next prime is 126263413. The reversal of 126263402 is 204362621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204362621 = 10369 ⋅19709.

It can be written as a sum of positive squares in only one way, i.e., 120978001 + 5285401 = 10999^2 + 2299^2 .

It is a super-2 number, since 2×126263402² = 31884893369227208, which 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, 31565849 + ... + 31565852.

Almost surely, 2^126263402 is an apocalyptic number.

126263402 is a deficient number, since it is larger than the sum of its proper divisors (63131704).

126263402 is an equidigital number, since it uses as much as digits as its factorization.

126263402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63131703.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 126263402 is about 11236.6988924684. The cubic root of 126263402 is about 501.6788923314.

The spelling of 126263402 in words is "one hundred twenty-six million, two hundred sixty-three thousand, four hundred two".