42401135623 has 16 divisors (see below), whose sum is σ = 55646058240. Its totient is φ = 31300905600.

The previous prime is 42401135597. The next prime is 42401135671. The reversal of 42401135623 is 32653110424.

It is a cyclic number.

It is not a de Polignac number, because 42401135623 - 2²¹ = 42399038471 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 (42401135323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14489698 + ... + 14492623.

It is an arithmetic number, because the mean of its divisors is an integer number (3477878640).

Almost surely, 2^42401135623 is an apocalyptic number.

42401135623 is a deficient number, since it is larger than the sum of its proper divisors (13244922617).

42401135623 is a wasteful number, since it uses less digits than its factorization.

42401135623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28982358.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 42401135623 in words is "forty-two billion, four hundred one million, one hundred thirty-five thousand, six hundred twenty-three".