149252131 has 4 divisors (see below), whose sum is σ = 170573872. Its totient is φ = 127930392.

The previous prime is 149252107. The next prime is 149252137. The reversal of 149252131 is 131252941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131252941 = 107 ⋅1226663.

It is a cyclic number.

It is not a de Polignac number, because 149252131 - 2⁷ = 149252003 is a prime.

It is a super-2 number, since 2×149252131² = 44552397216082322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149252131.

It is not an unprimeable number, because it can be changed into a prime (149252137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10660860 + ... + 10660873.

It is an arithmetic number, because the mean of its divisors is an integer number (42643468).

Almost surely, 2^149252131 is an apocalyptic number.

149252131 is a deficient number, since it is larger than the sum of its proper divisors (21321741).

149252131 is an equidigital number, since it uses as much as digits as its factorization.

149252131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21321740.

The product of its digits is 2160, while the sum is 28.

The square root of 149252131 is about 12216.8789385833. The cubic root of 149252131 is about 530.4447803051. Note that the first 3 decimals are identical.

The spelling of 149252131 in words is "one hundred forty-nine million, two hundred fifty-two thousand, one hundred thirty-one".