3500742 has 32 divisors (see below), whose sum is σ = 8474112. Its totient is φ = 941184.

The previous prime is 3500711. The next prime is 3500747. The reversal of 3500742 is 2470053.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3500747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (264816).

Almost surely, 2^3500742 is an apocalyptic number.

3500742 is an abundant number, since it is smaller than the sum of its proper divisors (4973370).

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

3500742 is a wasteful number, since it uses less digits than its factorization.

3500742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 3500742 is about 1871.0269907193. The cubic root of 3500742 is about 151.8401771167.

Adding to 3500742 its reverse (2470053), we get a palindrome (5970795).

The spelling of 3500742 in words is "three million, five hundred thousand, seven hundred forty-two".