123670420 has 24 divisors (see below), whose sum is σ = 260107848. Its totient is φ = 49392000.

The previous prime is 123670397. The next prime is 123670433. The reversal of 123670420 is 24076321.

It can be written as a sum of positive squares in 4 ways, for example, as 38514436 + 85155984 = 6206^2 + 9228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9610 + ... + 18430.

It is an arithmetic number, because the mean of its divisors is an integer number (10837827).

Almost surely, 2^123670420 is an apocalyptic number.

123670420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123670420 is an abundant number, since it is smaller than the sum of its proper divisors (136437428).

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

123670420 is a wasteful number, since it uses less digits than its factorization.

123670420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531 (or 9529 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 123670420 is about 11120.7203004122. The cubic root of 123670420 is about 498.2209038084.

The spelling of 123670420 in words is "one hundred twenty-three million, six hundred seventy thousand, four hundred twenty".