1002512140542 has 72 divisors (see below), whose sum is σ = 2396604882672. Its totient is φ = 302636283840.

The previous prime is 1002512140541. The next prime is 1002512140547. The reversal of 1002512140542 is 2450412152001.

It is a happy number.

1002512140542 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 512 + 140 + 5 + 4 + 2 = 666.

It is a super-3 number, since 3×1002512140542³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002512140541) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 302263 + ... + 1447890.

It is an arithmetic number, because the mean of its divisors is an integer number (33286178926).

Almost surely, 2^{1002512140542} is an apocalyptic number.

1002512140542 is an abundant number, since it is smaller than the sum of its proper divisors (1394092742130).

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

1002512140542 is a wasteful number, since it uses less digits than its factorization.

1002512140542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750446 (or 1750432 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1002512140542 its reverse (2450412152001), we get a palindrome (3452924292543).

The spelling of 1002512140542 in words is "one trillion, two billion, five hundred twelve million, one hundred forty thousand, five hundred forty-two".