149681140 has 48 divisors (see below), whose sum is σ = 360057600. Its totient is φ = 51201792.

The previous prime is 149681137. The next prime is 149681143. The reversal of 149681140 is 41186941.

It is an interprime number because it is at equal distance from previous prime (149681137) and next prime (149681143).

It is a junction number, because it is equal to n+sod(n) for n = 149681096 and 149681105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149681143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78721 + ... + 80599.

It is an arithmetic number, because the mean of its divisors is an integer number (7501200).

Almost surely, 2^149681140 is an apocalyptic number.

149681140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149681140 is an abundant number, since it is smaller than the sum of its proper divisors (210376460).

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

149681140 is a wasteful number, since it uses less digits than its factorization.

149681140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2462 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 149681140 is about 12234.4243836807. The cubic root of 149681140 is about 530.9525293809.

The spelling of 149681140 in words is "one hundred forty-nine million, six hundred eighty-one thousand, one hundred forty".