45042839 has 2 divisors, whose sum is σ = 45042840. Its totient is φ = 45042838.

The previous prime is 45042797. The next prime is 45042871. The reversal of 45042839 is 93824054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45042839 - 2¹² = 45038743 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45042799 and 45042808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45047839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22521419 + 22521420.

It is an arithmetic number, because the mean of its divisors is an integer number (22521420).

Almost surely, 2^45042839 is an apocalyptic number.

45042839 is a deficient number, since it is larger than the sum of its proper divisors (1).

45042839 is an equidigital number, since it uses as much as digits as its factorization.

45042839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 45042839 is about 6711.3962034736. The cubic root of 45042839 is about 355.8021640977.

The spelling of 45042839 in words is "forty-five million, forty-two thousand, eight hundred thirty-nine".