142057949 has 8 divisors (see below), whose sum is σ = 155059680. Its totient is φ = 129070800.

The previous prime is 142057943. The next prime is 142057957. The reversal of 142057949 is 949750241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142057949 - 2⁸ = 142057693 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 (142057943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31562 + ... + 35780.

It is an arithmetic number, because the mean of its divisors is an integer number (19382460).

Almost surely, 2^142057949 is an apocalyptic number.

It is an amenable number.

142057949 is a deficient number, since it is larger than the sum of its proper divisors (13001731).

142057949 is a wasteful number, since it uses less digits than its factorization.

142057949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 142057949 is about 11918.8065258230. The cubic root of 142057949 is about 521.7813035035.

The spelling of 142057949 in words is "one hundred forty-two million, fifty-seven thousand, nine hundred forty-nine".