742449623 has 2 divisors, whose sum is σ = 742449624. Its totient is φ = 742449622.

The previous prime is 742449611. The next prime is 742449649. The reversal of 742449623 is 326944247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 742449623 - 2¹⁴ = 742433239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742449523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371224811 + 371224812.

It is an arithmetic number, because the mean of its divisors is an integer number (371224812).

Almost surely, 2^742449623 is an apocalyptic number.

742449623 is a deficient number, since it is larger than the sum of its proper divisors (1).

742449623 is an equidigital number, since it uses as much as digits as its factorization.

742449623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 742449623 is about 27247.9287836709. The cubic root of 742449623 is about 905.5011308366.

The spelling of 742449623 in words is "seven hundred forty-two million, four hundred forty-nine thousand, six hundred twenty-three".