149945140 has 24 divisors (see below), whose sum is σ = 325043712. Its totient is φ = 58043040.

The previous prime is 149945111. The next prime is 149945143. The reversal of 149945140 is 41549941.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 149945140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149945143) 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, 120304 + ... + 121543.

It is an arithmetic number, because the mean of its divisors is an integer number (13543488).

Almost surely, 2^149945140 is an apocalyptic number.

149945140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149945140 is an abundant number, since it is smaller than the sum of its proper divisors (175098572).

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

149945140 is a wasteful number, since it uses less digits than its factorization.

149945140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241887 (or 241885 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 149945140 is about 12245.2088589783. The cubic root of 149945140 is about 531.2645017495.

The spelling of 149945140 in words is "one hundred forty-nine million, nine hundred forty-five thousand, one hundred forty".