142542645 has 16 divisors (see below), whose sum is σ = 260649600. Its totient is φ = 65162304.

The previous prime is 142542593. The next prime is 142542689. The reversal of 142542645 is 546245241.

It is not a de Polignac number, because 142542645 - 2¹⁴ = 142526261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678670 + ... + 678879.

It is an arithmetic number, because the mean of its divisors is an integer number (16290600).

Almost surely, 2^142542645 is an apocalyptic number.

142542645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142542645 is a deficient number, since it is larger than the sum of its proper divisors (118106955).

142542645 is a wasteful number, since it uses less digits than its factorization.

142542645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357564.

The product of its digits is 38400, while the sum is 33.

The square root of 142542645 is about 11939.1224551891. The cubic root of 142542645 is about 522.3740621212.

Adding to 142542645 its reverse (546245241), we get a palindrome (688787886).

The spelling of 142542645 in words is "one hundred forty-two million, five hundred forty-two thousand, six hundred forty-five".