1010042621 has 16 divisors (see below), whose sum is σ = 1174831104. Its totient is φ = 850451184.

The previous prime is 1010042599. The next prime is 1010042647. The reversal of 1010042621 is 1262400101.

It is a cyclic number.

It is not a de Polignac number, because 1010042621 - 2²⁶ = 942933757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1010042621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010042321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176816 + ... + 182438.

It is an arithmetic number, because the mean of its divisors is an integer number (73426944).

Almost surely, 2^1010042621 is an apocalyptic number.

It is an amenable number.

1010042621 is a deficient number, since it is larger than the sum of its proper divisors (164788483).

1010042621 is an equidigital number, since it uses as much as digits as its factorization.

1010042621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1010042621 is about 31781.1677098246. The cubic root of 1010042621 is about 1003.3363964126.

Adding to 1010042621 its reverse (1262400101), we get a palindrome (2272442722).

The spelling of 1010042621 in words is "one billion, ten million, forty-two thousand, six hundred twenty-one".