1401971 has 2 divisors, whose sum is σ = 1401972. Its totient is φ = 1401970.

The previous prime is 1401949. The next prime is 1401977. The reversal of 1401971 is 1791041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1401971 - 2¹⁰ = 1400947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1401977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700985 + 700986.

It is an arithmetic number, because the mean of its divisors is an integer number (700986).

2^1401971 is an apocalyptic number.

1401971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401971 is an equidigital number, since it uses as much as digits as its factorization.

1401971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1401971 is about 1184.0485631933. The cubic root of 1401971 is about 111.9213680645.

The spelling of 1401971 in words is "one million, four hundred one thousand, nine hundred seventy-one".