126979020 has 144 divisors (see below), whose sum is σ = 443439360. Its totient is φ = 28810368.

The previous prime is 126979019. The next prime is 126979031. The reversal of 126979020 is 20979621.

It is a super-2 number, since 2×126979020² = 32247343040320800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 225259 + ... + 225821.

It is an arithmetic number, because the mean of its divisors is an integer number (3079440).

Almost surely, 2^126979020 is an apocalyptic number.

126979020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126979020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221719680).

126979020 is an abundant number, since it is smaller than the sum of its proper divisors (316460340).

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

126979020 is a wasteful number, since it uses less digits than its factorization.

126979020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 126979020 is about 11268.4967941603. The cubic root of 126979020 is about 502.6248891333.

The spelling of 126979020 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, twenty".