1002542540 has 12 divisors (see below), whose sum is σ = 2105339376. Its totient is φ = 401017008.

The previous prime is 1002542539. The next prime is 1002542579. The reversal of 1002542540 is 452452001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25063544 + ... + 25063583.

It is an arithmetic number, because the mean of its divisors is an integer number (175444948).

Almost surely, 2^1002542540 is an apocalyptic number.

1002542540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002542540 is an abundant number, since it is smaller than the sum of its proper divisors (1102796836).

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

1002542540 is a wasteful number, since it uses less digits than its factorization.

1002542540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50127136 (or 50127134 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1002542540 is about 31662.9521681097. The cubic root of 1002542540 is about 1000.8467960674.

Adding to 1002542540 its reverse (452452001), we get a palindrome (1454994541).

The spelling of 1002542540 in words is "one billion, two million, five hundred forty-two thousand, five hundred forty".