126265031 has 4 divisors (see below), whose sum is σ = 126289200. Its totient is φ = 126240864.

The previous prime is 126265021. The next prime is 126265033. The reversal of 126265031 is 130562621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130562621 = 7 ⋅18651803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126265031 is a prime.

It is a super-2 number, since 2×126265031² = 31885716106861922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126265033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626 + ... + 15903.

It is an arithmetic number, because the mean of its divisors is an integer number (31572300).

Almost surely, 2^126265031 is an apocalyptic number.

126265031 is a deficient number, since it is larger than the sum of its proper divisors (24169).

126265031 is an equidigital number, since it uses as much as digits as its factorization.

126265031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24168.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 126265031 is about 11236.7713779359. The cubic root of 126265031 is about 501.6810498090.

The spelling of 126265031 in words is "one hundred twenty-six million, two hundred sixty-five thousand, thirty-one".