742783 has 2 divisors, whose sum is σ = 742784. Its totient is φ = 742782.

The previous prime is 742759. The next prime is 742789. The reversal of 742783 is 387247.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742783 is a prime.

742783 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371391 + 371392.

It is an arithmetic number, because the mean of its divisors is an integer number (371392).

2⁷⁴²⁷⁸³ is an apocalyptic number.

742783 is a deficient number, since it is larger than the sum of its proper divisors (1).

742783 is an equidigital number, since it uses as much as digits as its factorization.

742783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 742783 is about 861.8485945919. The cubic root of 742783 is about 90.5636640852.

The spelling of 742783 in words is "seven hundred forty-two thousand, seven hundred eighty-three".