142123157 has 16 divisors (see below), whose sum is σ = 158614848. Its totient is φ = 126247680.

The previous prime is 142123109. The next prime is 142123199. The reversal of 142123157 is 751321241.

It is a cyclic number.

It is not a de Polignac number, because 142123157 - 2¹⁴ = 142106773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142123057) by changing a digit.

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, 252158 + ... + 252720.

It is an arithmetic number, because the mean of its divisors is an integer number (9913428).

Almost surely, 2^142123157 is an apocalyptic number.

It is an amenable number.

142123157 is a deficient number, since it is larger than the sum of its proper divisors (16491691).

142123157 is a wasteful number, since it uses less digits than its factorization.

142123157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060.

The product of its digits is 1680, while the sum is 26.

The square root of 142123157 is about 11921.5417207675. The cubic root of 142123157 is about 521.8611279949.

Adding to 142123157 its reverse (751321241), we get a palindrome (893444398).

The spelling of 142123157 in words is "one hundred forty-two million, one hundred twenty-three thousand, one hundred fifty-seven".