1042221404 has 48 divisors (see below), whose sum is σ = 2117498880. Its totient is φ = 439620480.

The previous prime is 1042221403. The next prime is 1042221419. The reversal of 1042221404 is 4041222401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042221403) 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, 1010369 + ... + 1011399.

It is an arithmetic number, because the mean of its divisors is an integer number (44114560).

Almost surely, 2^1042221404 is an apocalyptic number.

1042221404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1042221404 is an abundant number, since it is smaller than the sum of its proper divisors (1075277476).

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

1042221404 is a wasteful number, since it uses less digits than its factorization.

1042221404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1042221404 is about 32283.4540283409. The cubic root of 1042221404 is about 1013.8802486356.

Adding to 1042221404 its reverse (4041222401), we get a palindrome (5083443805).

The spelling of 1042221404 in words is "one billion, forty-two million, two hundred twenty-one thousand, four hundred four".