1014421391 has 2 divisors, whose sum is σ = 1014421392. Its totient is φ = 1014421390.

The previous prime is 1014421349. The next prime is 1014421427. The reversal of 1014421391 is 1931244101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1014421391 - 2¹⁰ = 1014420367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1014421391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1014421301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507210695 + 507210696.

It is an arithmetic number, because the mean of its divisors is an integer number (507210696).

Almost surely, 2^1014421391 is an apocalyptic number.

1014421391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1014421391 is an equidigital number, since it uses as much as digits as its factorization.

1014421391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1014421391 is about 31849.9825902621. The cubic root of 1014421391 is about 1004.7842052125.

Adding to 1014421391 its reverse (1931244101), we get a palindrome (2945665492).

The spelling of 1014421391 in words is "one billion, fourteen million, four hundred twenty-one thousand, three hundred ninety-one".