149799040 has 128 divisors (see below), whose sum is σ = 383846400. Its totient is φ = 55738368.

The previous prime is 149799031. The next prime is 149799061. The reversal of 149799040 is 40997941.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1179457 + ... + 1179583.

It is an arithmetic number, because the mean of its divisors is an integer number (2998800).

Almost surely, 2^149799040 is an apocalyptic number.

149799040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149799040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191923200).

149799040 is an abundant number, since it is smaller than the sum of its proper divisors (234047360).

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

149799040 is a wasteful number, since it uses less digits than its factorization.

149799040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 149799040 is about 12239.2418065826. The cubic root of 149799040 is about 531.0918986973.

The spelling of 149799040 in words is "one hundred forty-nine million, seven hundred ninety-nine thousand, forty".