142519995 has 24 divisors (see below), whose sum is σ = 248476176. Its totient is φ = 75567168.

The previous prime is 142519939. The next prime is 142519997. The reversal of 142519995 is 599915241.

142519995 is a `hidden beast` number, since 1 + 42 + 519 + 9 + 95 = 666.

It is not a de Polignac number, because 142519995 - 2¹⁸ = 142257851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 142519995.

It is not an unprimeable number, because it can be changed into a prime (142519997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1369 + ... + 16938.

It is an arithmetic number, because the mean of its divisors is an integer number (10353174).

Almost surely, 2^142519995 is an apocalyptic number.

142519995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142519995 is a deficient number, since it is larger than the sum of its proper divisors (105956181).

142519995 is a wasteful number, since it uses less digits than its factorization.

142519995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18491 (or 18488 counting only the distinct ones).

The product of its digits is 145800, while the sum is 45.

The square root of 142519995 is about 11938.1738553265. The cubic root of 142519995 is about 522.3463922748.

The spelling of 142519995 in words is "one hundred forty-two million, five hundred nineteen thousand, nine hundred ninety-five".