2169242 has 4 divisors (see below), whose sum is σ = 3253866. Its totient is φ = 1084620.

The previous prime is 2169227. The next prime is 2169281. The reversal of 2169242 is 2429612.

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., 1590121 + 579121 = 1261^2 + 761^2 .

It is a super-2 number, since 2×2169242² = 9411221709128, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 6⁶ + 9³ + 2¹³ + 4⁷ + 2²¹ .

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542309 + ... + 542312.

2^2169242 is an apocalyptic number.

2169242 is a deficient number, since it is larger than the sum of its proper divisors (1084624).

2169242 is a wasteful number, since it uses less digits than its factorization.

2169242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084623.

The product of its digits is 1728, while the sum is 26.

The square root of 2169242 is about 1472.8346818296. The cubic root of 2169242 is about 129.4501828330.

The spelling of 2169242 in words is "two million, one hundred sixty-nine thousand, two hundred forty-two".