2100742 has 8 divisors (see below), whose sum is σ = 3601296. Its totient is φ = 900312.

The previous prime is 2100737. The next prime is 2100743. The reversal of 2100742 is 2470012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75013 + ... + 75040.

It is an arithmetic number, because the mean of its divisors is an integer number (450162).

2^2100742 is an apocalyptic number.

2100742 is a deficient number, since it is larger than the sum of its proper divisors (1500554).

2100742 is a wasteful number, since it uses less digits than its factorization.

2100742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150062.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2100742 is about 1449.3936663309. The cubic root of 2100742 is about 128.0729970996.

Adding to 2100742 its reverse (2470012), we get a palindrome (4570754).

The spelling of 2100742 in words is "two million, one hundred thousand, seven hundred forty-two".