1040420220 has 96 divisors (see below), whose sum is σ = 3379127808. Its totient is φ = 234254592.

The previous prime is 1040420207. The next prime is 1040420231. The reversal of 1040420220 is 220240401.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1040420220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9654 + ... + 46626.

It is an arithmetic number, because the mean of its divisors is an integer number (35199248).

Almost surely, 2^1040420220 is an apocalyptic number.

1040420220 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 1040420220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1689563904).

1040420220 is an abundant number, since it is smaller than the sum of its proper divisors (2338707588).

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

1040420220 is a wasteful number, since it uses less digits than its factorization.

1040420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37059 (or 37057 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1040420220 is about 32255.5455697156. The cubic root of 1040420220 is about 1013.2958437288.

Adding to 1040420220 its reverse (220240401), we get a palindrome (1260660621).

The spelling of 1040420220 in words is "one billion, forty million, four hundred twenty thousand, two hundred twenty".