1052331420 has 192 divisors, whose sum is σ = 3600930816. Its totient is φ = 224378880.

The previous prime is 1052331407. The next prime is 1052331437. The reversal of 1052331420 is 241332501.

It is a super-2 number, since 2×1052331420² = 2214802835038432800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 394732 + ... + 397388.

It is an arithmetic number, because the mean of its divisors is an integer number (18754848).

Almost surely, 2^1052331420 is an apocalyptic number.

1052331420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1052331420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800465408).

1052331420 is an abundant number, since it is smaller than the sum of its proper divisors (2548599396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1052331420 is a wasteful number, since it uses less digits than its factorization.

1052331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740 (or 2738 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1052331420 is about 32439.6581362998. The cubic root of 1052331420 is about 1017.1480695450.

Adding to 1052331420 its reverse (241332501), we get a palindrome (1293663921).

The spelling of 1052331420 in words is "one billion, fifty-two million, three hundred thirty-one thousand, four hundred twenty".