126031380 has 24 divisors (see below), whose sum is σ = 352888032. Its totient is φ = 33608352.

The previous prime is 126031379. The next prime is 126031447. The reversal of 126031380 is 83130621.

It is a self number, because there is not a number n which added to its sum of digits gives 126031380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050202 + ... + 1050321.

It is an arithmetic number, because the mean of its divisors is an integer number (14703668).

Almost surely, 2^126031380 is an apocalyptic number.

126031380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126031380 is an abundant number, since it is smaller than the sum of its proper divisors (226856652).

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

126031380 is a wasteful number, since it uses less digits than its factorization.

126031380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100535 (or 2100533 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 126031380 is about 11226.3698495996. The cubic root of 126031380 is about 501.3714083724.

It can be divided in two parts, 1260 and 31380, that added together give a triangular number (32640 = T₂₅₅).

The spelling of 126031380 in words is "one hundred twenty-six million, thirty-one thousand, three hundred eighty".