4020122 has 4 divisors (see below), whose sum is σ = 6030186. Its totient is φ = 2010060.

The previous prime is 4020119. The next prime is 4020139. The reversal of 4020122 is 2210204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3682561 + 337561 = 1919^2 + 581^2 .

It is a super-2 number, since 2×4020122² = 32322761789768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005029 + ... + 1005032.

Almost surely, 2^4020122 is an apocalyptic number.

4020122 is a deficient number, since it is larger than the sum of its proper divisors (2010064).

4020122 is a wasteful number, since it uses less digits than its factorization.

4020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010063.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4020122 is about 2005.0241893803. The cubic root of 4020122 is about 159.0058407991.

Adding to 4020122 its reverse (2210204), we get a palindrome (6230326).

The spelling of 4020122 in words is "four million, twenty thousand, one hundred twenty-two".