1047419221 has 2 divisors, whose sum is σ = 1047419222. Its totient is φ = 1047419220.

The previous prime is 1047419161. The next prime is 1047419279. The reversal of 1047419221 is 1229147401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047234321 + 184900 = 32361^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047419221 - 2²³ = 1039030613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047419281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523709610 + 523709611.

It is an arithmetic number, because the mean of its divisors is an integer number (523709611).

Almost surely, 2^1047419221 is an apocalyptic number.

It is an amenable number.

1047419221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047419221 is an equidigital number, since it uses as much as digits as its factorization.

1047419221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1047419221 is about 32363.8567077535. The cubic root of 1047419221 is about 1015.5629452591.

The spelling of 1047419221 in words is "one billion, forty-seven million, four hundred nineteen thousand, two hundred twenty-one".