1053420021 has 36 divisors (see below), whose sum is σ = 1657868160. Its totient is φ = 643794480.

The previous prime is 1053420019. The next prime is 1053420031. The reversal of 1053420021 is 1200243501.

It is not a de Polignac number, because 1053420021 - 2¹ = 1053420019 is a prime.

It is a super-2 number, since 2×1053420021² = 2219387481287280882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1053419976 and 1053420003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053420031) 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, 95490 + ... + 105948.

Almost surely, 2^1053420021 is an apocalyptic number.

It is an amenable number.

1053420021 is a deficient number, since it is larger than the sum of its proper divisors (604448139).

1053420021 is a wasteful number, since it uses less digits than its factorization.

1053420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10534 (or 10512 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1053420021 is about 32456.4326597980. The cubic root of 1053420021 is about 1017.4986836809.

Adding to 1053420021 its reverse (1200243501), we get a palindrome (2253663522).

The spelling of 1053420021 in words is "one billion, fifty-three million, four hundred twenty thousand, twenty-one".