113042320421 has 16 divisors (see below), whose sum is σ = 118061368560. Its totient is φ = 108099425280.

The previous prime is 113042320411. The next prime is 113042320427. The reversal of 113042320421 is 124023240311.

It can be written as a sum of positive squares in 8 ways, for example, as 14044620100 + 98997700321 = 118510^2 + 314639^2 .

It is a cyclic number.

It is not a de Polignac number, because 113042320421 - 2³⁰ = 111968578597 is a prime.

It is a super-3 number, since 3×113042320421³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113042320427) 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, 4749611 + ... + 4773351.

It is an arithmetic number, because the mean of its divisors is an integer number (7378835535).

Almost surely, 2^113042320421 is an apocalyptic number.

It is an amenable number.

113042320421 is a deficient number, since it is larger than the sum of its proper divisors (5019048139).

113042320421 is a wasteful number, since it uses less digits than its factorization.

113042320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25336.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 113042320421 its reverse (124023240311), we get a palindrome (237065560732).

The spelling of 113042320421 in words is "one hundred thirteen billion, forty-two million, three hundred twenty thousand, four hundred twenty-one".