42120401233 has 4 divisors (see below), whose sum is σ = 42121046628. Its totient is φ = 42119755840.

The previous prime is 42120401231. The next prime is 42120401317. The reversal of 42120401233 is 33210402124.

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 36546733584 + 5573667649 = 191172^2 + 74657^2 .

It is a cyclic number.

It is not a de Polignac number, because 42120401233 - 2¹ = 42120401231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42120401231) 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, 212188 + ... + 359533.

It is an arithmetic number, because the mean of its divisors is an integer number (10530261657).

Almost surely, 2^42120401233 is an apocalyptic number.

It is an amenable number.

42120401233 is a deficient number, since it is larger than the sum of its proper divisors (645395).

42120401233 is an equidigital number, since it uses as much as digits as its factorization.

42120401233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645394.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 42120401233 its reverse (33210402124), we get a palindrome (75330803357).

The spelling of 42120401233 in words is "forty-two billion, one hundred twenty million, four hundred one thousand, two hundred thirty-three".