2123042980 has 24 divisors (see below), whose sum is σ = 4578888888. Its totient is φ = 826265088.

The previous prime is 2123042951. The next prime is 2123042981. The reversal of 2123042980 is 892403212.

It can be written as a sum of positive squares in 4 ways, for example, as 129777664 + 1993265316 = 11392^2 + 44646^2 .

It is a super-2 number, since 2×2123042980² = 9014622989854560800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123042981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433749 + ... + 1435228.

It is an arithmetic number, because the mean of its divisors is an integer number (190787037).

Almost surely, 2^2123042980 is an apocalyptic number.

2123042980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123042980 is an abundant number, since it is smaller than the sum of its proper divisors (2455845908).

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

2123042980 is a wasteful number, since it uses less digits than its factorization.

2123042980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869023 (or 2869021 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2123042980 is about 46076.4905347619. The cubic root of 2123042980 is about 1285.2460035608.

The spelling of 2123042980 in words is "two billion, one hundred twenty-three million, forty-two thousand, nine hundred eighty".