42934457 has 2 divisors, whose sum is σ = 42934458. Its totient is φ = 42934456.

The previous prime is 42934447. The next prime is 42934501. The reversal of 42934457 is 75443924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41267776 + 1666681 = 6424^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 42934457 - 2¹² = 42930361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42934457.

It is not a weakly prime, because it can be changed into another prime (42934427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467228 + 21467229.

It is an arithmetic number, because the mean of its divisors is an integer number (21467229).

Almost surely, 2^42934457 is an apocalyptic number.

It is an amenable number.

42934457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42934457 is an equidigital number, since it uses as much as digits as its factorization.

42934457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 42934457 is about 6552.4390115437. The cubic root of 42934457 is about 350.1617130262.

The spelling of 42934457 in words is "forty-two million, nine hundred thirty-four thousand, four hundred fifty-seven".