742655540 has 48 divisors (see below), whose sum is σ = 1801445184. Its totient is φ = 254169600.

The previous prime is 742655503. The next prime is 742655567. The reversal of 742655540 is 45556247.

It is a junction number, because it is equal to n+sod(n) for n = 742655494 and 742655503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95546 + ... + 103025.

It is an arithmetic number, because the mean of its divisors is an integer number (37530108).

Almost surely, 2^742655540 is an apocalyptic number.

It is an amenable number.

742655540 is an abundant number, since it is smaller than the sum of its proper divisors (1058789644).

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

742655540 is a wasteful number, since it uses less digits than its factorization.

742655540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198608 (or 198606 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

The square root of 742655540 is about 27251.7071024918. The cubic root of 742655540 is about 905.5848361078.

The spelling of 742655540 in words is "seven hundred forty-two million, six hundred fifty-five thousand, five hundred forty".