1402257 has 16 divisors (see below), whose sum is σ = 2000960. Its totient is φ = 870912.

The previous prime is 1402249. The next prime is 1402267. The reversal of 1402257 is 7522041.

It is not a de Polignac number, because 1402257 - 2³ = 1402249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3993 + ... + 4329.

It is an arithmetic number, because the mean of its divisors is an integer number (125060).

2^1402257 is an apocalyptic number.

It is an amenable number.

1402257 is a deficient number, since it is larger than the sum of its proper divisors (598703).

1402257 is a wasteful number, since it uses less digits than its factorization.

1402257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1402257 is about 1184.1693291080. The cubic root of 1402257 is about 111.9289781446.

Adding to 1402257 its reverse (7522041), we get a palindrome (8924298).

The spelling of 1402257 in words is "one million, four hundred two thousand, two hundred fifty-seven".