1960421 has 2 divisors, whose sum is σ = 1960422. Its totient is φ = 1960420.

The previous prime is 1960397. The next prime is 1960447. The reversal of 1960421 is 1240691.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 83521 = 1370^2 + 289^2 .

It is an emirp because it is prime and its reverse (1240691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1960421 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1960481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980210 + 980211.

It is an arithmetic number, because the mean of its divisors is an integer number (980211).

2^1960421 is an apocalyptic number.

It is an amenable number.

1960421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1960421 is an equidigital number, since it uses as much as digits as its factorization.

1960421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1960421 is about 1400.1503490697. The cubic root of 1960421 is about 125.1554545908.

The spelling of 1960421 in words is "one million, nine hundred sixty thousand, four hundred twenty-one".