149971230402 has 128 divisors (see below), whose sum is σ = 359475701760. Its totient is φ = 40805614080.

The previous prime is 149971230379. The next prime is 149971230403. The reversal of 149971230402 is 204032179941.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (149971230403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 113527902 + ... + 113529222.

It is an arithmetic number, because the mean of its divisors is an integer number (2808403920).

Almost surely, 2^149971230402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149971230402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179737850880).

149971230402 is an abundant number, since it is smaller than the sum of its proper divisors (209504471358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149971230402 is a wasteful number, since it uses less digits than its factorization.

149971230402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 149971230402 in words is "one hundred forty-nine billion, nine hundred seventy-one million, two hundred thirty thousand, four hundred two".