1052423021 has 16 divisors (see below), whose sum is σ = 1177590960. Its totient is φ = 933864960.

The previous prime is 1052422981. The next prime is 1052423023. The reversal of 1052423021 is 1203242501.

It can be written as a sum of positive squares in 8 ways, for example, as 1755625 + 1050667396 = 1325^2 + 32414^2 .

It is not a de Polignac number, because 1052423021 - 2¹⁸ = 1052160877 is a prime.

It is a super-2 number, since 2×1052423021² = 2215188430261532882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1052422984 and 1052423002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052423023) 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, 81851 + ... + 93831.

It is an arithmetic number, because the mean of its divisors is an integer number (73599435).

Almost surely, 2^1052423021 is an apocalyptic number.

It is an amenable number.

1052423021 is a deficient number, since it is larger than the sum of its proper divisors (125167939).

1052423021 is a wasteful number, since it uses less digits than its factorization.

1052423021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12256.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1052423021 is about 32441.0699731066. The cubic root of 1052423021 is about 1017.1775815014.

Adding to 1052423021 its reverse (1203242501), we get a palindrome (2255665522).

The spelling of 1052423021 in words is "one billion, fifty-two million, four hundred twenty-three thousand, twenty-one".