123871290 has 32 divisors (see below), whose sum is σ = 299471040. Its totient is φ = 32790144.

The previous prime is 123871271. The next prime is 123871303. The reversal of 123871290 is 92178321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10960 + ... + 19179.

It is an arithmetic number, because the mean of its divisors is an integer number (9358470).

Almost surely, 2^123871290 is an apocalyptic number.

123871290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123871290 is an abundant number, since it is smaller than the sum of its proper divisors (175599750).

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

123871290 is a wasteful number, since it uses less digits than its factorization.

123871290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30286.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 123871290 is about 11129.7479755833. The cubic root of 123871290 is about 498.4905007434.

The spelling of 123871290 in words is "one hundred twenty-three million, eight hundred seventy-one thousand, two hundred ninety".