742457 has 2 divisors, whose sum is σ = 742458. Its totient is φ = 742456.

The previous prime is 742439. The next prime is 742499. The reversal of 742457 is 754247.

742457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 609961 + 132496 = 781^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 742457 - 2⁶ = 742393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (742057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371228 + 371229.

It is an arithmetic number, because the mean of its divisors is an integer number (371229).

2⁷⁴²⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

742457 is a deficient number, since it is larger than the sum of its proper divisors (1).

742457 is an equidigital number, since it uses as much as digits as its factorization.

742457 is an evil number, because the sum of its binary digits is even.

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

The square root of 742457 is about 861.6594454888. The cubic root of 742457 is about 90.5504129855.

The spelling of 742457 in words is "seven hundred forty-two thousand, four hundred fifty-seven".