126231520 has 24 divisors (see below), whose sum is σ = 298222344. Its totient is φ = 50492544.

The previous prime is 126231499. The next prime is 126231533. The reversal of 126231520 is 25132621.

It is a junction number, because it is equal to n+sod(n) for n = 126231491 and 126231500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394314 + ... + 394633.

It is an arithmetic number, because the mean of its divisors is an integer number (12425931).

Almost surely, 2^126231520 is an apocalyptic number.

126231520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126231520 is an abundant number, since it is smaller than the sum of its proper divisors (171990824).

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

126231520 is an equidigital number, since it uses as much as digits as its factorization.

126231520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788962 (or 788954 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 126231520 is about 11235.2801478201. The cubic root of 126231520 is about 501.6366634865.

The spelling of 126231520 in words is "one hundred twenty-six million, two hundred thirty-one thousand, five hundred twenty".