142864657 has 12 divisors (see below), whose sum is σ = 156089484. Its totient is φ = 130690560.

The previous prime is 142864637. The next prime is 142864679. The reversal of 142864657 is 756468241.

It can be written as a sum of positive squares in 6 ways, for example, as 34058896 + 108805761 = 5836^2 + 10431^2 .

It is not a de Polignac number, because 142864657 - 2¹¹ = 142862609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142864637) 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 11 ways as a sum of consecutive naturals, for example, 15357 + ... + 22837.

It is an arithmetic number, because the mean of its divisors is an integer number (13007457).

Almost surely, 2^142864657 is an apocalyptic number.

It is an amenable number.

142864657 is a deficient number, since it is larger than the sum of its proper divisors (13224827).

142864657 is a wasteful number, since it uses less digits than its factorization.

142864657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620 (or 7607 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 142864657 is about 11952.6004283587. The cubic root of 142864657 is about 522.7671239293.

The spelling of 142864657 in words is "one hundred forty-two million, eight hundred sixty-four thousand, six hundred fifty-seven".