42062621 has 2 divisors, whose sum is σ = 42062622. Its totient is φ = 42062620.

The previous prime is 42062591. The next prime is 42062633. The reversal of 42062621 is 12626024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42055225 + 7396 = 6485^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 42062621 - 2¹⁰ = 42061597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42062521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21031310 + 21031311.

It is an arithmetic number, because the mean of its divisors is an integer number (21031311).

Almost surely, 2^42062621 is an apocalyptic number.

It is an amenable number.

42062621 is a deficient number, since it is larger than the sum of its proper divisors (1).

42062621 is an equidigital number, since it uses as much as digits as its factorization.

42062621 is an evil number, because the sum of its binary digits is even.

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

The square root of 42062621 is about 6485.5702139442. The cubic root of 42062621 is about 347.7753344669.

Adding to 42062621 its reverse (12626024), we get a palindrome (54688645).

The spelling of 42062621 in words is "forty-two million, sixty-two thousand, six hundred twenty-one".