4021492 has 6 divisors (see below), whose sum is σ = 7037618. Its totient is φ = 2010744.

The previous prime is 4021477. The next prime is 4021513. The reversal of 4021492 is 2941204.

It can be written as a sum of positive squares in only one way, i.e., 4016016 + 5476 = 2004^2 + 74^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502683 + ... + 502690.

Almost surely, 2^4021492 is an apocalyptic number.

It is an amenable number.

4021492 is a deficient number, since it is larger than the sum of its proper divisors (3016126).

4021492 is a wasteful number, since it uses less digits than its factorization.

4021492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005377 (or 1005375 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4021492 is about 2005.3658020421. The cubic root of 4021492 is about 159.0239010521.

Adding to 4021492 its reverse (2941204), we get a palindrome (6962696).

The spelling of 4021492 in words is "four million, twenty-one thousand, four hundred ninety-two".