151209123 has 16 divisors (see below), whose sum is σ = 218234016. Its totient is φ = 92574720.

The previous prime is 151209119. The next prime is 151209137. The reversal of 151209123 is 321902151.

It is not a de Polignac number, because 151209123 - 2² = 151209119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151209093 and 151209102.

It is not an unprimeable number, because it can be changed into a prime (151209143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2158 + ... + 17523.

It is an arithmetic number, because the mean of its divisors is an integer number (13639626).

Almost surely, 2^151209123 is an apocalyptic number.

151209123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

151209123 is a deficient number, since it is larger than the sum of its proper divisors (67024893).

151209123 is a wasteful number, since it uses less digits than its factorization.

151209123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 151209123 is about 12296.7118775712. The cubic root of 151209123 is about 532.7531155764.

The spelling of 151209123 in words is "one hundred fifty-one million, two hundred nine thousand, one hundred twenty-three".