7042457 has 2 divisors, whose sum is σ = 7042458. Its totient is φ = 7042456.

The previous prime is 7042423. The next prime is 7042459. The reversal of 7042457 is 7542407.

7042457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4206601 + 2835856 = 2051^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 7042457 - 2¹⁴ = 7026073 is a prime.

Together with 7042459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7042459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3521228 + 3521229.

It is an arithmetic number, because the mean of its divisors is an integer number (3521229).

Almost surely, 2^7042457 is an apocalyptic number.

It is an amenable number.

7042457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7042457 is an equidigital number, since it uses as much as digits as its factorization.

7042457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 7042457 is about 2653.7628002517. The cubic root of 7042457 is about 191.6790881259.

The spelling of 7042457 in words is "seven million, forty-two thousand, four hundred fifty-seven".