1042541220 has 96 divisors (see below), whose sum is σ = 3341834496. Its totient is φ = 237888000.

The previous prime is 1042541219. The next prime is 1042541231. The reversal of 1042541220 is 221452401.

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

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, 292650 + ... + 296190.

It is an arithmetic number, because the mean of its divisors is an integer number (34810776).

Almost surely, 2^1042541220 is an apocalyptic number.

1042541220 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 1042541220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670917248).

1042541220 is an abundant number, since it is smaller than the sum of its proper divisors (2299293276).

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

1042541220 is a wasteful number, since it uses less digits than its factorization.

1042541220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261 (or 4259 counting only the distinct ones).

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

The square root of 1042541220 is about 32288.4068978325. The cubic root of 1042541220 is about 1013.9839444411.

Adding to 1042541220 its reverse (221452401), we get a palindrome (1263993621).

The spelling of 1042541220 in words is "one billion, forty-two million, five hundred forty-one thousand, two hundred twenty".