3100642 has 4 divisors (see below), whose sum is σ = 4650966. Its totient is φ = 1550320.

The previous prime is 3100633. The next prime is 3100649. The reversal of 3100642 is 2460013.

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., 3094081 + 6561 = 1759^2 + 81^2 .

It is a super-2 number, since 2×3100642² = 19227961624328, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3100649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775159 + ... + 775162.

Almost surely, 2^3100642 is an apocalyptic number.

3100642 is a deficient number, since it is larger than the sum of its proper divisors (1550324).

3100642 is a wasteful number, since it uses less digits than its factorization.

3100642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550323.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 3100642 is about 1760.8639924764. The cubic root of 3100642 is about 145.8200384796.

Adding to 3100642 its reverse (2460013), we get a palindrome (5560655).

The spelling of 3100642 in words is "three million, one hundred thousand, six hundred forty-two".