2921742 has 48 divisors (see below), whose sum is σ = 6722352. Its totient is φ = 915840.

The previous prime is 2921729. The next prime is 2921753. The reversal of 2921742 is 2471292.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27253 + ... + 27359.

It is an arithmetic number, because the mean of its divisors is an integer number (140049).

2^2921742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3361176).

2921742 is an abundant number, since it is smaller than the sum of its proper divisors (3800610).

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

2921742 is a wasteful number, since it uses less digits than its factorization.

2921742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 190 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2921742 is about 1709.3103872615. The cubic root of 2921742 is about 142.9598074403.

It can be divided in two parts, 2921 and 742, that added together give a palindrome (3663).

The spelling of 2921742 in words is "two million, nine hundred twenty-one thousand, seven hundred forty-two".