142181634 has 24 divisors (see below), whose sum is σ = 330790608. Its totient is φ = 40623240.

The previous prime is 142181597. The next prime is 142181647. The reversal of 142181634 is 436181241.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241512 + ... + 242099.

It is an arithmetic number, because the mean of its divisors is an integer number (13782942).

Almost surely, 2^142181634 is an apocalyptic number.

142181634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

142181634 is an abundant number, since it is smaller than the sum of its proper divisors (188608974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142181634 is a wasteful number, since it uses less digits than its factorization.

142181634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483630 (or 483623 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 142181634 is about 11923.9940456208. The cubic root of 142181634 is about 521.9326919571.

The spelling of 142181634 in words is "one hundred forty-two million, one hundred eighty-one thousand, six hundred thirty-four".