742840254 has 64 divisors (see below), whose sum is σ = 1795510080. Its totient is φ = 226281600.

The previous prime is 742840243. The next prime is 742840261. The reversal of 742840254 is 452048247.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65664 + ... + 76140.

It is an arithmetic number, because the mean of its divisors is an integer number (28054845).

Almost surely, 2^742840254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742840254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897755040).

742840254 is an abundant number, since it is smaller than the sum of its proper divisors (1052669826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742840254 is a wasteful number, since it uses less digits than its factorization.

742840254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10602 (or 10596 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 742840254 is about 27255.0959271840. The cubic root of 742840254 is about 905.6599091945.

The spelling of 742840254 in words is "seven hundred forty-two million, eight hundred forty thousand, two hundred fifty-four".