142957 has 4 divisors (see below), whose sum is σ = 145440. Its totient is φ = 140476.

The previous prime is 142949. The next prime is 142963. The reversal of 142957 is 759241.

142957 = T₃₈ + T₃₉ + ... + T₉₆.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759241 = 7 ⋅108463.

It is a cyclic number.

It is not a de Polignac number, because 142957 - 2³ = 142949 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153 + ... + 1270.

It is an arithmetic number, because the mean of its divisors is an integer number (36360).

2¹⁴²⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

142957 is a deficient number, since it is larger than the sum of its proper divisors (2483).

142957 is an equidigital number, since it uses as much as digits as its factorization.

142957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482.

The product of its digits is 2520, while the sum is 28.

The square root of 142957 is about 378.0965485164. The cubic root of 142957 is about 52.2879732810.

The spelling of 142957 in words is "one hundred forty-two thousand, nine hundred fifty-seven".