126321072 has 20 divisors (see below), whose sum is σ = 326329560. Its totient is φ = 42107008.

The previous prime is 126321061. The next prime is 126321089. The reversal of 126321072 is 270123621.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1315797 + ... + 1315892.

It is an arithmetic number, because the mean of its divisors is an integer number (16316478).

Almost surely, 2^126321072 is an apocalyptic number.

126321072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126321072 is an abundant number, since it is smaller than the sum of its proper divisors (200008488).

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

126321072 is a wasteful number, since it uses less digits than its factorization.

126321072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631700 (or 2631694 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 126321072 is about 11239.2647446352. The cubic root of 126321072 is about 501.7552602458.

Adding to 126321072 its reverse (270123621), we get a palindrome (396444693).

The spelling of 126321072 in words is "one hundred twenty-six million, three hundred twenty-one thousand, seventy-two".