142003957 has 6 divisors (see below), whose sum is σ = 142615382. Its totient is φ = 141395112.

The previous prime is 142003949. The next prime is 142003969. The reversal of 142003957 is 759300241.

It can be written as a sum of positive squares in only one way, i.e., 122014116 + 19989841 = 11046^2 + 4471^2 .

It is not a de Polignac number, because 142003957 - 2³ = 142003949 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 (142003987) 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 in 5 ways as a sum of consecutive naturals, for example, 68143 + ... + 70195.

Almost surely, 2^142003957 is an apocalyptic number.

It is an amenable number.

142003957 is a deficient number, since it is larger than the sum of its proper divisors (611425).

142003957 is an frugal number, since it uses more digits than its factorization.

142003957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2316 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 142003957 is about 11916.5413186881. The cubic root of 142003957 is about 521.7151906104.

The spelling of 142003957 in words is "one hundred forty-two million, three thousand, nine hundred fifty-seven".