142909137 has 48 divisors (see below), whose sum is σ = 248793600. Its totient is φ = 80831520.

The previous prime is 142909111. The next prime is 142909139. The reversal of 142909137 is 731909241.

It is not a de Polignac number, because 142909137 - 2⁶ = 142909073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142909139) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143712 + ... + 144702.

It is an arithmetic number, because the mean of its divisors is an integer number (5183200).

Almost surely, 2^142909137 is an apocalyptic number.

It is an amenable number.

142909137 is a deficient number, since it is larger than the sum of its proper divisors (105884463).

142909137 is a wasteful number, since it uses less digits than its factorization.

142909137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 142909137 is about 11954.4609665179. The cubic root of 142909137 is about 522.8213717034.

The spelling of 142909137 in words is "one hundred forty-two million, nine hundred nine thousand, one hundred thirty-seven".