1052420421 has 16 divisors (see below), whose sum is σ = 1520447936. Its totient is φ = 643666176.

The previous prime is 1052420387. The next prime is 1052420423. The reversal of 1052420421 is 1240242501.

It is not a de Polignac number, because 1052420421 - 2⁷ = 1052420293 is a prime.

It is a super-2 number, since 2×1052420421² = 2215177485075634482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052420423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76420 + ... + 89133.

It is an arithmetic number, because the mean of its divisors is an integer number (95027996).

Almost surely, 2^1052420421 is an apocalyptic number.

It is an amenable number.

1052420421 is a deficient number, since it is larger than the sum of its proper divisors (468027515).

1052420421 is a wasteful number, since it uses less digits than its factorization.

1052420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165732.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1052420421 is about 32441.0299004209. The cubic root of 1052420421 is about 1017.1767438585.

Adding to 1052420421 its reverse (1240242501), we get a palindrome (2292662922).

The spelling of 1052420421 in words is "one billion, fifty-two million, four hundred twenty thousand, four hundred twenty-one".