157279123 has 2 divisors, whose sum is σ = 157279124. Its totient is φ = 157279122.

The previous prime is 157279103. The next prime is 157279127. The reversal of 157279123 is 321972751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157279123 is a prime.

It is not a weakly prime, because it can be changed into another prime (157279127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78639561 + 78639562.

It is an arithmetic number, because the mean of its divisors is an integer number (78639562).

Almost surely, 2^157279123 is an apocalyptic number.

157279123 is a deficient number, since it is larger than the sum of its proper divisors (1).

157279123 is an equidigital number, since it uses as much as digits as its factorization.

157279123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 157279123 is about 12541.0973602791. The cubic root of 157279123 is about 539.7885809312.

The spelling of 157279123 in words is "one hundred fifty-seven million, two hundred seventy-nine thousand, one hundred twenty-three".