4242512640 has 72 divisors (see below), whose sum is σ = 13549537008. Its totient is φ = 1131335680.

The previous prime is 4242512623. The next prime is 4242512647. The reversal of 4242512640 is 462152424.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4242512598 and 4242512607.

It is not an unprimeable number, because it can be changed into a prime (4242512647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548571 + ... + 556250.

It is an arithmetic number, because the mean of its divisors is an integer number (188188014).

Almost surely, 2^4242512640 is an apocalyptic number.

4242512640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4242512640 is an abundant number, since it is smaller than the sum of its proper divisors (9307024368).

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

4242512640 is a wasteful number, since it uses less digits than its factorization.

4242512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104845 (or 1104831 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 4242512640 is about 65134.5733078831. The cubic root of 4242512640 is about 1618.8541203233.

The spelling of 4242512640 in words is "four billion, two hundred forty-two million, five hundred twelve thousand, six hundred forty".