7407138 has 32 divisors (see below), whose sum is σ = 15863040. Its totient is φ = 2297600.

The previous prime is 7407107. The next prime is 7407139. The reversal of 7407138 is 8317047.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7407139) 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, 9943 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (495720).

Almost surely, 2^7407138 is an apocalyptic number.

7407138 is an abundant number, since it is smaller than the sum of its proper divisors (8455902).

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

7407138 is a wasteful number, since it uses less digits than its factorization.

7407138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 7407138 is about 2721.6057760080. The cubic root of 7407138 is about 194.9321525961.

Subtracting 7407138 from its reverse (8317047), we obtain a palindrome (909909).

The spelling of 7407138 in words is "seven million, four hundred seven thousand, one hundred thirty-eight".