42061301251 has 2 divisors, whose sum is σ = 42061301252. Its totient is φ = 42061301250.

The previous prime is 42061301237. The next prime is 42061301263. The reversal of 42061301251 is 15210316024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42061301251 - 2³³ = 33471366659 is a prime.

It is not a weakly prime, because it can be changed into another prime (42061301551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21030650625 + 21030650626.

It is an arithmetic number, because the mean of its divisors is an integer number (21030650626).

Almost surely, 2^42061301251 is an apocalyptic number.

42061301251 is a deficient number, since it is larger than the sum of its proper divisors (1).

42061301251 is an equidigital number, since it uses as much as digits as its factorization.

42061301251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 42061301251 its reverse (15210316024), we get a palindrome (57271617275).

The spelling of 42061301251 in words is "forty-two billion, sixty-one million, three hundred one thousand, two hundred fifty-one".