42003261401 has 4 divisors (see below), whose sum is σ = 42594856704. Its totient is φ = 41411666100.

The previous prime is 42003261379. The next prime is 42003261407. The reversal of 42003261401 is 10416230024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42003261401 - 2³⁰ = 40929519577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42003261407) 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, 295797545 + ... + 295797686.

It is an arithmetic number, because the mean of its divisors is an integer number (10648714176).

Almost surely, 2^42003261401 is an apocalyptic number.

It is an amenable number.

42003261401 is a deficient number, since it is larger than the sum of its proper divisors (591595303).

42003261401 is an equidigital number, since it uses as much as digits as its factorization.

42003261401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591595302.

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

Adding to 42003261401 its reverse (10416230024), we get a palindrome (52419491425).

The spelling of 42003261401 in words is "forty-two billion, three million, two hundred sixty-one thousand, four hundred one".