149117620 has 24 divisors (see below), whose sum is σ = 319057704. Its totient is φ = 58521216.

The previous prime is 149117609. The next prime is 149117621. The reversal of 149117620 is 26711941.

149117620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11806096 + 137311524 = 3436^2 + 11718^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149117621) 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, 69279 + ... + 71398.

It is an arithmetic number, because the mean of its divisors is an integer number (13294071).

Almost surely, 2^149117620 is an apocalyptic number.

149117620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149117620 is an abundant number, since it is smaller than the sum of its proper divisors (169940084).

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

149117620 is a wasteful number, since it uses less digits than its factorization.

149117620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140739 (or 140737 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 149117620 is about 12211.3725682251. The cubic root of 149117620 is about 530.2853808990.

The spelling of 149117620 in words is "one hundred forty-nine million, one hundred seventeen thousand, six hundred twenty".