149842390 has 16 divisors (see below), whose sum is σ = 272967408. Its totient is φ = 59214496.

The previous prime is 149842367. The next prime is 149842421. The reversal of 149842390 is 93248941.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89437 + ... + 91096.

It is an arithmetic number, because the mean of its divisors is an integer number (17060463).

Almost surely, 2^149842390 is an apocalyptic number.

149842390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149842390 is a deficient number, since it is larger than the sum of its proper divisors (123125018).

149842390 is a wasteful number, since it uses less digits than its factorization.

149842390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180623.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 149842390 is about 12241.0126215113. The cubic root of 149842390 is about 531.1431242443.

The spelling of 149842390 in words is "one hundred forty-nine million, eight hundred forty-two thousand, three hundred ninety".