1042521540 has 24 divisors (see below), whose sum is σ = 2919060480. Its totient is φ = 278005728.

The previous prime is 1042521539. The next prime is 1042521581. The reversal of 1042521540 is 451252401.

It is a super-2 number, since 2×1042521540² = 2173702322727943200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1042521540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8687620 + ... + 8687739.

It is an arithmetic number, because the mean of its divisors is an integer number (121627520).

Almost surely, 2^1042521540 is an apocalyptic number.

1042521540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042521540 is an abundant number, since it is smaller than the sum of its proper divisors (1876538940).

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

1042521540 is a wasteful number, since it uses less digits than its factorization.

1042521540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17375371 (or 17375369 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1042521540 is about 32288.1021430495. The cubic root of 1042521540 is about 1013.9775640924.

Adding to 1042521540 its reverse (451252401), we get a palindrome (1493773941).

The spelling of 1042521540 in words is "one billion, forty-two million, five hundred twenty-one thousand, five hundred forty".