1497421 has 2 divisors, whose sum is σ = 1497422. Its totient is φ = 1497420.

The previous prime is 1497407. The next prime is 1497439. The reversal of 1497421 is 1247941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1028196 + 469225 = 1014^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497421 - 2¹⁷ = 1366349 is a prime.

It is a Chen prime.

1497421 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1497421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1497121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748710 + 748711.

It is an arithmetic number, because the mean of its divisors is an integer number (748711).

2^1497421 is an apocalyptic number.

It is an amenable number.

1497421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497421 is an equidigital number, since it uses as much as digits as its factorization.

1497421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 1497421 is about 1223.6915461014. The cubic root of 1497421 is about 114.4057817754.

The spelling of 1497421 in words is "one million, four hundred ninety-seven thousand, four hundred twenty-one".