149002465921 has 4 divisors (see below), whose sum is σ = 149478512452. Its totient is φ = 148526419392.

The previous prime is 149002465907. The next prime is 149002466021. The reversal of 149002465921 is 129564200941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611869696 + 148390596225 = 24736^2 + 385215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149002465921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149002460921) 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, 238022796 + ... + 238023421.

It is an arithmetic number, because the mean of its divisors is an integer number (37369628113).

Almost surely, 2^149002465921 is an apocalyptic number.

It is an amenable number.

149002465921 is a deficient number, since it is larger than the sum of its proper divisors (476046531).

149002465921 is an equidigital number, since it uses as much as digits as its factorization.

149002465921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476046530.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 149002465921 in words is "one hundred forty-nine billion, two million, four hundred sixty-five thousand, nine hundred twenty-one".