42926749 has 2 divisors, whose sum is σ = 42926750. Its totient is φ = 42926748.

The previous prime is 42926743. The next prime is 42926759. The reversal of 42926749 is 94762924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38007225 + 4919524 = 6165^2 + 2218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42926749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42926743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21463374 + 21463375.

It is an arithmetic number, because the mean of its divisors is an integer number (21463375).

Almost surely, 2^42926749 is an apocalyptic number.

It is an amenable number.

42926749 is a deficient number, since it is larger than the sum of its proper divisors (1).

42926749 is an equidigital number, since it uses as much as digits as its factorization.

42926749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 42926749 is about 6551.8508072147. The cubic root of 42926749 is about 350.1407569906.

The spelling of 42926749 in words is "forty-two million, nine hundred twenty-six thousand, seven hundred forty-nine".