149909942 has 32 divisors (see below), whose sum is σ = 277761792. Its totient is φ = 59089824.

The previous prime is 149909941. The next prime is 149909951. The reversal of 149909942 is 249909941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149909941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54533 + ... + 57215.

It is an arithmetic number, because the mean of its divisors is an integer number (8680056).

Almost surely, 2^149909942 is an apocalyptic number.

149909942 is a deficient number, since it is larger than the sum of its proper divisors (127851850).

149909942 is a wasteful number, since it uses less digits than its factorization.

149909942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 149909942 is about 12243.7715594501. The cubic root of 149909942 is about 531.2229289643. Note that the first 3 decimals are identical.

Subtracting 149909942 from its reverse (249909941), we obtain a palindrome (99999999).

The spelling of 149909942 in words is "one hundred forty-nine million, nine hundred nine thousand, nine hundred forty-two".