1044212421 has 16 divisors (see below), whose sum is σ = 1595161728. Its totient is φ = 595200000.

The previous prime is 1044212363. The next prime is 1044212447. The reversal of 1044212421 is 1242124401.

It is not a de Polignac number, because 1044212421 - 2⁶ = 1044212357 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044212021) 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, 53580 + ... + 70421.

It is an arithmetic number, because the mean of its divisors is an integer number (99697608).

Almost surely, 2^1044212421 is an apocalyptic number.

It is an amenable number.

1044212421 is a deficient number, since it is larger than the sum of its proper divisors (550949307).

1044212421 is a wasteful number, since it uses less digits than its factorization.

1044212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124412.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1044212421 is about 32314.2758080697. The cubic root of 1044212421 is about 1014.5254630194.

Adding to 1044212421 its reverse (1242124401), we get a palindrome (2286336822).

The spelling of 1044212421 in words is "one billion, forty-four million, two hundred twelve thousand, four hundred twenty-one".