142215250 has 32 divisors (see below), whose sum is σ = 266947200. Its totient is φ = 56732400.

The previous prime is 142215221. The next prime is 142215253. The reversal of 142215250 is 52512241.

It is not an unprimeable number, because it can be changed into a prime (142215253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154291 + ... + 155209.

It is an arithmetic number, because the mean of its divisors is an integer number (8342100).

Almost surely, 2^142215250 is an apocalyptic number.

142215250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142215250 is a deficient number, since it is larger than the sum of its proper divisors (124731950).

142215250 is an equidigital number, since it uses as much as digits as its factorization.

142215250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 142215250 is about 11925.4035571129. The cubic root of 142215250 is about 521.9738222267.

Adding to 142215250 its reverse (52512241), we get a palindrome (194727491).

The spelling of 142215250 in words is "one hundred forty-two million, two hundred fifteen thousand, two hundred fifty".