381929142 has 16 divisors (see below), whose sum is σ = 872980992. Its totient is φ = 109122600.

The previous prime is 381929137. The next prime is 381929143. The reversal of 381929142 is 241929183.

It is a self number, because there is not a number n which added to its sum of digits gives 381929142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381929143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4546734 + ... + 4546817.

It is an arithmetic number, because the mean of its divisors is an integer number (54561312).

Almost surely, 2^381929142 is an apocalyptic number.

381929142 is an abundant number, since it is smaller than the sum of its proper divisors (491051850).

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

381929142 is a wasteful number, since it uses less digits than its factorization.

381929142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093563.

The product of its digits is 31104, while the sum is 39.

The square root of 381929142 is about 19543.0074962888. The cubic root of 381929142 is about 725.5392845296.

The spelling of 381929142 in words is "three hundred eighty-one million, nine hundred twenty-nine thousand, one hundred forty-two".