42251306401 has 4 divisors (see below), whose sum is σ = 42401667204. Its totient is φ = 42100945600.

The previous prime is 42251306399. The next prime is 42251306417. The reversal of 42251306401 is 10460315224.

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 24964316001 + 17286990400 = 158001^2 + 131480^2 .

It is a cyclic number.

It is not a de Polignac number, because 42251306401 - 2¹ = 42251306399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42251306401.

It is not an unprimeable number, because it can be changed into a prime (42251306431) 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, 75179980 + ... + 75180541.

It is an arithmetic number, because the mean of its divisors is an integer number (10600416801).

Almost surely, 2^42251306401 is an apocalyptic number.

It is an amenable number.

42251306401 is a deficient number, since it is larger than the sum of its proper divisors (150360803).

42251306401 is a wasteful number, since it uses less digits than its factorization.

42251306401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150360802.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 42251306401 in words is "forty-two billion, two hundred fifty-one million, three hundred six thousand, four hundred one".