3521142 has 48 divisors (see below), whose sum is σ = 8322912. Its totient is φ = 1071360.

The previous prime is 3521131. The next prime is 3521143. The reversal of 3521142 is 2411253.

3521142 is a `hidden beast` number, since 3 + 521 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11167 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (173394).

Almost surely, 2^3521142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4161456).

3521142 is an abundant number, since it is smaller than the sum of its proper divisors (4801770).

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

3521142 is a wasteful number, since it uses less digits than its factorization.

3521142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 370 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 3521142 is about 1876.4706232713. The cubic root of 3521142 is about 152.1345473022.

Adding to 3521142 its reverse (2411253), we get a palindrome (5932395).

It can be divided in two parts, 35211 and 42, that added together give a palindrome (35253).

The spelling of 3521142 in words is "three million, five hundred twenty-one thousand, one hundred forty-two".