742523320 has 64 divisors (see below), whose sum is σ = 2082931200. Its totient is φ = 231434880.

The previous prime is 742523317. The next prime is 742523321. The reversal of 742523320 is 23325247.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742523321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117460 + ... + 123619.

It is an arithmetic number, because the mean of its divisors is an integer number (32545800).

Almost surely, 2^742523320 is an apocalyptic number.

742523320 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

742523320 is an abundant number, since it is smaller than the sum of its proper divisors (1340407880).

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

742523320 is a wasteful number, since it uses less digits than its factorization.

742523320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241108 (or 241104 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 742523320 is about 27249.2810914343. The cubic root of 742523320 is about 905.5310904491.

Adding to 742523320 its reverse (23325247), we get a palindrome (765848567).

The spelling of 742523320 in words is "seven hundred forty-two million, five hundred twenty-three thousand, three hundred twenty".