149540000 has 60 divisors (see below), whose sum is σ = 367940034. Its totient is φ = 59808000.

The previous prime is 149539991. The next prime is 149540003. The reversal of 149540000 is 45941.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 22391824 + 127148176 = 4732^2 + 11276^2 .

It is not an unprimeable number, because it can be changed into a prime (149540003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16262 + ... + 23738.

Almost surely, 2^149540000 is an apocalyptic number.

149540000 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 149540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183970017).

149540000 is an abundant number, since it is smaller than the sum of its proper divisors (218400034).

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

149540000 is an frugal number, since it uses more digits than its factorization.

149540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7507 (or 7484 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 149540000 is about 12228.6548728795. The cubic root of 149540000 is about 530.7855918351.

Adding to 149540000 its reverse (45941), we get a palindrome (149585941).

The spelling of 149540000 in words is "one hundred forty-nine million, five hundred forty thousand".