42322949 has 2 divisors, whose sum is σ = 42322950. Its totient is φ = 42322948.

The previous prime is 42322927. The next prime is 42322963. The reversal of 42322949 is 94922324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41152225 + 1170724 = 6415^2 + 1082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42322949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42322909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21161474 + 21161475.

It is an arithmetic number, because the mean of its divisors is an integer number (21161475).

Almost surely, 2^42322949 is an apocalyptic number.

It is an amenable number.

42322949 is a deficient number, since it is larger than the sum of its proper divisors (1).

42322949 is an equidigital number, since it uses as much as digits as its factorization.

42322949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 42322949 is about 6505.6090414349. The cubic root of 42322949 is about 348.4913266225.

The spelling of 42322949 in words is "forty-two million, three hundred twenty-two thousand, nine hundred forty-nine".