402043423051 has 4 divisors (see below), whose sum is σ = 406024051104. Its totient is φ = 398062795000.

The previous prime is 402043423037. The next prime is 402043423069. The reversal of 402043423051 is 150324340204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 402043423051 - 2¹⁵ = 402043390283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402043423151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990313875 + ... + 1990314076.

It is an arithmetic number, because the mean of its divisors is an integer number (101506012776).

Almost surely, 2^402043423051 is an apocalyptic number.

402043423051 is a deficient number, since it is larger than the sum of its proper divisors (3980628053).

402043423051 is a wasteful number, since it uses less digits than its factorization.

402043423051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980628052.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 402043423051 its reverse (150324340204), we get a palindrome (552367763255).

The spelling of 402043423051 in words is "four hundred two billion, forty-three million, four hundred twenty-three thousand, fifty-one".