149421795 has 16 divisors (see below), whose sum is σ = 251658240. Its totient is φ = 75497184.

The previous prime is 149421793. The next prime is 149421809. The reversal of 149421795 is 597124941.

It is not a de Polignac number, because 149421795 - 2¹ = 149421793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149421793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261859 + ... + 262428.

It is an arithmetic number, because the mean of its divisors is an integer number (15728640).

Almost surely, 2^149421795 is an apocalyptic number.

149421795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149421795 is a deficient number, since it is larger than the sum of its proper divisors (102236445).

149421795 is a wasteful number, since it uses less digits than its factorization.

149421795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524314.

The product of its digits is 90720, while the sum is 42.

The square root of 149421795 is about 12223.8208020242. The cubic root of 149421795 is about 530.6457005025.

The spelling of 149421795 in words is "one hundred forty-nine million, four hundred twenty-one thousand, seven hundred ninety-five".