149421537 has 8 divisors (see below), whose sum is σ = 221365280. Its totient is φ = 99614340.

The previous prime is 149421511. The next prime is 149421539. The reversal of 149421537 is 735124941.

149421537 is a `hidden beast` number, since 14 + 94 + 21 + 537 = 666.

It is not a de Polignac number, because 149421537 - 2¹⁴ = 149405153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149421539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2767039 + ... + 2767092.

It is an arithmetic number, because the mean of its divisors is an integer number (27670660).

Almost surely, 2^149421537 is an apocalyptic number.

It is an amenable number.

149421537 is a deficient number, since it is larger than the sum of its proper divisors (71943743).

149421537 is an equidigital number, since it uses as much as digits as its factorization.

149421537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534140 (or 5534134 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 149421537 is about 12223.8102488545. The cubic root of 149421537 is about 530.6453950882.

The spelling of 149421537 in words is "one hundred forty-nine million, four hundred twenty-one thousand, five hundred thirty-seven".