142206645 has 16 divisors (see below), whose sum is σ = 260035200. Its totient is φ = 65008704.

The previous prime is 142206619. The next prime is 142206661. The reversal of 142206645 is 546602241.

It is not a de Polignac number, because 142206645 - 2²³ = 133818037 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, 677070 + ... + 677279.

It is an arithmetic number, because the mean of its divisors is an integer number (16252200).

Almost surely, 2^142206645 is an apocalyptic number.

142206645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142206645 is a deficient number, since it is larger than the sum of its proper divisors (117828555).

142206645 is a wasteful number, since it uses less digits than its factorization.

142206645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354364.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 142206645 is about 11925.0427672189. The cubic root of 142206645 is about 521.9632943465.

Adding to 142206645 its reverse (546602241), we get a palindrome (688808886).

The spelling of 142206645 in words is "one hundred forty-two million, two hundred six thousand, six hundred forty-five".