1420060921 has 2 divisors, whose sum is σ = 1420060922. Its totient is φ = 1420060920.

The previous prime is 1420060903. The next prime is 1420060933. The reversal of 1420060921 is 1290600241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129699321 + 290361600 = 33611^2 + 17040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420060921 - 2¹¹ = 1420058873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420060981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710030460 + 710030461.

It is an arithmetic number, because the mean of its divisors is an integer number (710030461).

Almost surely, 2^1420060921 is an apocalyptic number.

It is an amenable number.

1420060921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420060921 is an equidigital number, since it uses as much as digits as its factorization.

1420060921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1420060921 is about 37683.6956919037. The cubic root of 1420060921 is about 1124.0069382453.

The spelling of 1420060921 in words is "one billion, four hundred twenty million, sixty thousand, nine hundred twenty-one".