74742949 has 2 divisors, whose sum is σ = 74742950. Its totient is φ = 74742948.

The previous prime is 74742919. The next prime is 74742973. The reversal of 74742949 is 94924747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47858724 + 26884225 = 6918^2 + 5185^2 .

It is a cyclic number.

It is not a de Polignac number, because 74742949 - 2⁷ = 74742821 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74742899 and 74742908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74742919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37371474 + 37371475.

It is an arithmetic number, because the mean of its divisors is an integer number (37371475).

Almost surely, 2^74742949 is an apocalyptic number.

It is an amenable number.

74742949 is a deficient number, since it is larger than the sum of its proper divisors (1).

74742949 is an equidigital number, since it uses as much as digits as its factorization.

74742949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 74742949 is about 8645.4004534203. The cubic root of 74742949 is about 421.2339918251.

The spelling of 74742949 in words is "seventy-four million, seven hundred forty-two thousand, nine hundred forty-nine".