1492021 has 4 divisors (see below), whose sum is σ = 1543500. Its totient is φ = 1440544.

The previous prime is 1492019. The next prime is 1492063. The reversal of 1492021 is 1202941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1202941 = 53 ⋅22697.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 874225 = 786^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1492021 - 2¹ = 1492019 is a prime.

It is a super-2 number, since 2×1492021² = 4452253328882, which contains 22 as substring.

It is a Duffinian number.

1492021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1492021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1432021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25696 + ... + 25753.

It is an arithmetic number, because the mean of its divisors is an integer number (385875).

2^1492021 is an apocalyptic number.

It is an amenable number.

1492021 is a deficient number, since it is larger than the sum of its proper divisors (51479).

1492021 is an equidigital number, since it uses as much as digits as its factorization.

1492021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51478.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1492021 is about 1221.4831149058. The cubic root of 1492021 is about 114.2680927444.

Adding to 1492021 its reverse (1202941), we get a palindrome (2694962).

It can be divided in two parts, 14920 and 21, that added together give a palindrome (14941).

The spelling of 1492021 in words is "one million, four hundred ninety-two thousand, twenty-one".