1001542540 has 12 divisors (see below), whose sum is σ = 2103239376. Its totient is φ = 400617008.

The previous prime is 1001542511. The next prime is 1001542571. The reversal of 1001542540 is 452451001.

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, 25038544 + ... + 25038583.

It is an arithmetic number, because the mean of its divisors is an integer number (175269948).

Almost surely, 2^1001542540 is an apocalyptic number.

1001542540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001542540 is an abundant number, since it is smaller than the sum of its proper divisors (1101696836).

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

1001542540 is a wasteful number, since it uses less digits than its factorization.

1001542540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50077136 (or 50077134 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1001542540 is about 31647.1569023190. The cubic root of 1001542540 is about 1000.5139158453.

Adding to 1001542540 its reverse (452451001), we get a palindrome (1453993541).

The spelling of 1001542540 in words is "one billion, one million, five hundred forty-two thousand, five hundred forty".