1421362157 has 2 divisors, whose sum is σ = 1421362158. Its totient is φ = 1421362156.

The previous prime is 1421362133. The next prime is 1421362169. The reversal of 1421362157 is 7512631241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1254151396 + 167210761 = 35414^2 + 12931^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421362157 - 2⁸ = 1421361901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421362357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710681078 + 710681079.

It is an arithmetic number, because the mean of its divisors is an integer number (710681079).

Almost surely, 2^1421362157 is an apocalyptic number.

It is an amenable number.

1421362157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421362157 is an equidigital number, since it uses as much as digits as its factorization.

1421362157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 1421362157 is about 37700.9569772440. The cubic root of 1421362157 is about 1124.3501516384.

Adding to 1421362157 its reverse (7512631241), we get a palindrome (8933993398).

The spelling of 1421362157 in words is "one billion, four hundred twenty-one million, three hundred sixty-two thousand, one hundred fifty-seven".