10021542135 has 32 divisors (see below), whose sum is σ = 17529737472. Its totient is φ = 4848487680.

The previous prime is 10021542121. The next prime is 10021542161. The reversal of 10021542135 is 53124512001.

It is a happy number.

It is not a de Polignac number, because 10021542135 - 2⁴ = 10021542119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12027 + ... + 142083.

It is an arithmetic number, because the mean of its divisors is an integer number (547804296).

Almost surely, 2^10021542135 is an apocalyptic number.

10021542135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10021542135 is a deficient number, since it is larger than the sum of its proper divisors (7508195337).

10021542135 is a wasteful number, since it uses less digits than its factorization.

10021542135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130543.

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 10021542135 in words is "ten billion, twenty-one million, five hundred forty-two thousand, one hundred thirty-five".