142256605 has 16 divisors (see below), whose sum is σ = 173416320. Its totient is φ = 112010688.

The previous prime is 142256573. The next prime is 142256617. The reversal of 142256605 is 506652241.

It is a cyclic number.

It is not a de Polignac number, because 142256605 - 2⁵ = 142256573 is a prime.

It is a super-2 number, since 2×142256605² = 40473883332252050, which contains 22 as substring.

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, 154336 + ... + 155254.

It is an arithmetic number, because the mean of its divisors is an integer number (10838520).

Almost surely, 2^142256605 is an apocalyptic number.

It is an amenable number.

142256605 is a deficient number, since it is larger than the sum of its proper divisors (31159715).

142256605 is an equidigital number, since it uses as much as digits as its factorization.

142256605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 142256605 is about 11927.1373346667. The cubic root of 142256605 is about 522.0244125242.

The spelling of 142256605 in words is "one hundred forty-two million, two hundred fifty-six thousand, six hundred five".