42020166451 has 2 divisors, whose sum is σ = 42020166452. Its totient is φ = 42020166450.

The previous prime is 42020166413. The next prime is 42020166467. The reversal of 42020166451 is 15466102024.

It is a happy number.

42020166451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42020166451 - 2³¹ = 39872682803 is a prime.

It is not a weakly prime, because it can be changed into another prime (42020166481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010083225 + 21010083226.

It is an arithmetic number, because the mean of its divisors is an integer number (21010083226).

Almost surely, 2^42020166451 is an apocalyptic number.

42020166451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42020166451 is an equidigital number, since it uses as much as digits as its factorization.

42020166451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 42020166451 its reverse (15466102024), we get a palindrome (57486268475).

The spelling of 42020166451 in words is "forty-two billion, twenty million, one hundred sixty-six thousand, four hundred fifty-one".