402342420149 has 4 divisors (see below), whose sum is σ = 402357910764. Its totient is φ = 402326929536.

The previous prime is 402342420107. The next prime is 402342420191. The reversal of 402342420149 is 941024243204.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (402342420107) and next prime (402342420191).

It can be written as a sum of positive squares in 2 ways, for example, as 367379029924 + 34963390225 = 606118^2 + 186985^2 .

It is a cyclic number.

It is not a de Polignac number, because 402342420149 - 2²⁰ = 402341371573 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 (402342423149) 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, 7706282 + ... + 7758315.

It is an arithmetic number, because the mean of its divisors is an integer number (100589477691).

Almost surely, 2^402342420149 is an apocalyptic number.

It is an amenable number.

402342420149 is a deficient number, since it is larger than the sum of its proper divisors (15490615).

402342420149 is a wasteful number, since it uses less digits than its factorization.

402342420149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15490614.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 402342420149 in words is "four hundred two billion, three hundred forty-two million, four hundred twenty thousand, one hundred forty-nine".