123561130 has 64 divisors (see below), whose sum is σ = 284850432. Its totient is φ = 37463040.

The previous prime is 123561127. The next prime is 123561143. The reversal of 123561130 is 31165321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26322 + ... + 30658.

It is an arithmetic number, because the mean of its divisors is an integer number (4450788).

Almost surely, 2^123561130 is an apocalyptic number.

123561130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123561130 is an abundant number, since it is smaller than the sum of its proper divisors (161289302).

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

123561130 is a wasteful number, since it uses less digits than its factorization.

123561130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 123561130 is about 11115.8054139140. The cubic root of 123561130 is about 498.0740979941.

The spelling of 123561130 in words is "one hundred twenty-three million, five hundred sixty-one thousand, one hundred thirty".