1040542220 has 24 divisors (see below), whose sum is σ = 2300146800. Its totient is φ = 394310592.

The previous prime is 1040542213. The next prime is 1040542253. The reversal of 1040542220 is 222450401.

It is a happy number.

It is a super-2 number, since 2×1040542220² = 2165456223205056800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1040542192 and 1040542201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368755 + ... + 1369514.

It is an arithmetic number, because the mean of its divisors is an integer number (95839450).

Almost surely, 2^1040542220 is an apocalyptic number.

1040542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040542220 is an abundant number, since it is smaller than the sum of its proper divisors (1259604580).

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

1040542220 is a wasteful number, since it uses less digits than its factorization.

1040542220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738297 (or 2738295 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1040542220 is about 32257.4366619544. The cubic root of 1040542220 is about 1013.3354486432.

Adding to 1040542220 its reverse (222450401), we get a palindrome (1262992621).

It can be divided in two parts, 10405 and 42220, that added together give a palindrome (52625).

The spelling of 1040542220 in words is "one billion, forty million, five hundred forty-two thousand, two hundred twenty".