60442721 has 2 divisors, whose sum is σ = 60442722. Its totient is φ = 60442720.

The previous prime is 60442717. The next prime is 60442741. The reversal of 60442721 is 12724406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36784225 + 23658496 = 6065^2 + 4864^2 .

It is a cyclic number.

It is not a de Polignac number, because 60442721 - 2² = 60442717 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60442741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30221360 + 30221361.

It is an arithmetic number, because the mean of its divisors is an integer number (30221361).

Almost surely, 2^60442721 is an apocalyptic number.

It is an amenable number.

60442721 is a deficient number, since it is larger than the sum of its proper divisors (1).

60442721 is an equidigital number, since it uses as much as digits as its factorization.

60442721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 60442721 is about 7774.4916875639. The cubic root of 60442721 is about 392.4472911221.

The spelling of 60442721 in words is "sixty million, four hundred forty-two thousand, seven hundred twenty-one".