3556842 has 16 divisors (see below), whose sum is σ = 7532352. Its totient is φ = 1115840.

The previous prime is 3556811. The next prime is 3556843. The reversal of 3556842 is 2486553.

It is a super-2 number, since 2×3556842² = 25302250025928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3556843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17334 + ... + 17537.

It is an arithmetic number, because the mean of its divisors is an integer number (470772).

Almost surely, 2^3556842 is an apocalyptic number.

3556842 is an abundant number, since it is smaller than the sum of its proper divisors (3975510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3556842 is a wasteful number, since it uses less digits than its factorization.

3556842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34893.

The product of its digits is 28800, while the sum is 33.

The square root of 3556842 is about 1885.9591724107. The cubic root of 3556842 is about 152.6469710952.

It can be divided in two parts, 35568 and 42, that multiplied together give a triangular number (1493856 = T₁₇₂₈).

The spelling of 3556842 in words is "three million, five hundred fifty-six thousand, eight hundred forty-two".