7402740 has 24 divisors (see below), whose sum is σ = 20727840. Its totient is φ = 1974048.

The previous prime is 7402739. The next prime is 7402741. The reversal of 7402740 is 472047.

It is an interprime number because it is at equal distance from previous prime (7402739) and next prime (7402741).

It is a self number, because there is not a number n which added to its sum of digits gives 7402740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7402741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61630 + ... + 61749.

It is an arithmetic number, because the mean of its divisors is an integer number (863660).

Almost surely, 2^7402740 is an apocalyptic number.

It is an amenable number.

7402740 is an abundant number, since it is smaller than the sum of its proper divisors (13325100).

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

7402740 is a wasteful number, since it uses less digits than its factorization.

7402740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123391 (or 123389 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7402740 is about 2720.7976771528. The cubic root of 7402740 is about 194.8935645324.

Adding to 7402740 its reverse (472047), we get a palindrome (7874787).

The spelling of 7402740 in words is "seven million, four hundred two thousand, seven hundred forty".