123561010 has 8 divisors (see below), whose sum is σ = 222409836. Its totient is φ = 49424400.

The previous prime is 123560999. The next prime is 123561017. The reversal of 123561010 is 10165321.

It can be written as a sum of positive squares in 2 ways, for example, as 113870241 + 9690769 = 10671^2 + 3113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (123561017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6178041 + ... + 6178060.

Almost surely, 2^123561010 is an apocalyptic number.

123561010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123561010 is a deficient number, since it is larger than the sum of its proper divisors (98848826).

123561010 is a wasteful number, since it uses less digits than its factorization.

123561010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12356108.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 123561010 is about 11115.8000161932. The cubic root of 123561010 is about 498.0739367543.

It can be divided in two parts, 12356 and 1010, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 123561010 in words is "one hundred twenty-three million, five hundred sixty-one thousand, ten".