123961015 has 8 divisors (see below), whose sum is σ = 150198048. Its totient is φ = 98205600.

The previous prime is 123960983. The next prime is 123961027. The reversal of 123961015 is 510169321.

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

It is not a de Polignac number, because 123961015 - 2⁵ = 123960983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119836 + ... + 120865.

It is an arithmetic number, because the mean of its divisors is an integer number (18774756).

Almost surely, 2^123961015 is an apocalyptic number.

123961015 is a deficient number, since it is larger than the sum of its proper divisors (26237033).

123961015 is a wasteful number, since it uses less digits than its factorization.

123961015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240809.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 123961015 is about 11133.7781098781. The cubic root of 123961015 is about 498.6108306582.

The spelling of 123961015 in words is "one hundred twenty-three million, nine hundred sixty-one thousand, fifteen".