149999942 has 16 divisors (see below), whose sum is σ = 238515840. Its totient is φ = 70505088.

The previous prime is 149999909. The next prime is 149999957. The reversal of 149999942 is 249999941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34283 + ... + 38409.

It is an arithmetic number, because the mean of its divisors is an integer number (14907240).

Almost surely, 2^149999942 is an apocalyptic number.

149999942 is a deficient number, since it is larger than the sum of its proper divisors (88515898).

149999942 is a wasteful number, since it uses less digits than its factorization.

149999942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215.

The product of its digits is 1889568, while the sum is 56.

The square root of 149999942 is about 12247.4463460756. The cubic root of 149999942 is about 531.3292161089.

Subtracting 149999942 from its reverse (249999941), we obtain a palindrome (99999999).

The spelling of 149999942 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred forty-two".