149424381 has 12 divisors (see below), whose sum is σ = 215941180. Its totient is φ = 99567360.

The previous prime is 149424311. The next prime is 149424383. The reversal of 149424381 is 183424941.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39803481 + 109620900 = 6309^2 + 10470^2 .

It is not a de Polignac number, because 149424381 - 2²⁶ = 82315517 is a prime.

It is a super-2 number, since 2×149424381² = 44655291274466322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149424383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34125 + ... + 38253.

Almost surely, 2^149424381 is an apocalyptic number.

It is an amenable number.

149424381 is a deficient number, since it is larger than the sum of its proper divisors (66516799).

149424381 is a wasteful number, since it uses less digits than its factorization.

149424381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156 (or 8153 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 149424381 is about 12223.9265786408. The cubic root of 149424381 is about 530.6487617290.

The spelling of 149424381 in words is "one hundred forty-nine million, four hundred twenty-four thousand, three hundred eighty-one".