1042412221 has 16 divisors (see below), whose sum is σ = 1096018560. Its totient is φ = 990118080.

The previous prime is 1042412153. The next prime is 1042412237. The reversal of 1042412221 is 1222142401.

It is a cyclic number.

It is not a de Polignac number, because 1042412221 - 2¹³ = 1042404029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042412251) 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, 485811 + ... + 487951.

It is an arithmetic number, because the mean of its divisors is an integer number (68501160).

Almost surely, 2^1042412221 is an apocalyptic number.

It is an amenable number.

1042412221 is a deficient number, since it is larger than the sum of its proper divisors (53606339).

1042412221 is a wasteful number, since it uses less digits than its factorization.

1042412221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1042412221 is about 32286.4092305106. The cubic root of 1042412221 is about 1013.9421208957.

Adding to 1042412221 its reverse (1222142401), we get a palindrome (2264554622).

The spelling of 1042412221 in words is "one billion, forty-two million, four hundred twelve thousand, two hundred twenty-one".