142657544 has 8 divisors (see below), whose sum is σ = 267482910. Its totient is φ = 71328768.

The previous prime is 142657519. The next prime is 142657547. The reversal of 142657544 is 445756241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 115304644 + 27352900 = 10738^2 + 5230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×142657544² = 40702349720223872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142657498 and 142657507.

It is not an unprimeable number, because it can be changed into a prime (142657547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8916089 + ... + 8916104.

Almost surely, 2^142657544 is an apocalyptic number.

It is an amenable number.

142657544 is a deficient number, since it is larger than the sum of its proper divisors (124825366).

142657544 is a wasteful number, since it uses less digits than its factorization.

142657544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17832199 (or 17832195 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 142657544 is about 11943.9333554738. The cubic root of 142657544 is about 522.5143806852.

The spelling of 142657544 in words is "one hundred forty-two million, six hundred fifty-seven thousand, five hundred forty-four".