149193421 has 8 divisors (see below), whose sum is σ = 165853184. Its totient is φ = 133274160.

The previous prime is 149193397. The next prime is 149193427. The reversal of 149193421 is 124391941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149193421 - 2⁷ = 149193293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149193427) 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, 184701 + ... + 185506.

It is an arithmetic number, because the mean of its divisors is an integer number (20731648).

Almost surely, 2^149193421 is an apocalyptic number.

It is an amenable number.

149193421 is a deficient number, since it is larger than the sum of its proper divisors (16659763).

149193421 is a wasteful number, since it uses less digits than its factorization.

149193421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370251.

The product of its digits is 7776, while the sum is 34.

The square root of 149193421 is about 12214.4758790543. The cubic root of 149193421 is about 530.3752190485.

The spelling of 149193421 in words is "one hundred forty-nine million, one hundred ninety-three thousand, four hundred twenty-one".