742439 has 2 divisors, whose sum is σ = 742440. Its totient is φ = 742438.

The previous prime is 742409. The next prime is 742457. The reversal of 742439 is 934247.

742439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 742439 - 2¹⁶ = 676903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371219 + 371220.

It is an arithmetic number, because the mean of its divisors is an integer number (371220).

2⁷⁴²⁴³⁹ is an apocalyptic number.

742439 is a deficient number, since it is larger than the sum of its proper divisors (1).

742439 is an equidigital number, since it uses as much as digits as its factorization.

742439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 742439 is about 861.6490004636. The cubic root of 742439 is about 90.5496812167.

The spelling of 742439 in words is "seven hundred forty-two thousand, four hundred thirty-nine".