142671645 has 32 divisors (see below), whose sum is σ = 264672000. Its totient is φ = 72781632.

The previous prime is 142671631. The next prime is 142671647. The reversal of 142671645 is 546176241.

142671645 is a `hidden beast` number, since 1 + 4 + 2 + 6 + 7 + 1 + 645 = 666.

142671645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142671645 - 2²⁵ = 109117213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142671647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19870 + ... + 26079.

It is an arithmetic number, because the mean of its divisors is an integer number (8271000).

Almost surely, 2^142671645 is an apocalyptic number.

142671645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142671645 is a deficient number, since it is larger than the sum of its proper divisors (122000355).

142671645 is a wasteful number, since it uses less digits than its factorization.

142671645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45986 (or 45980 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 142671645 is about 11944.5236405643. The cubic root of 142671645 is about 522.5315961144.

The spelling of 142671645 in words is "one hundred forty-two million, six hundred seventy-one thousand, six hundred forty-five".