7402387 has 4 divisors (see below), whose sum is σ = 7417440. Its totient is φ = 7387336.

The previous prime is 7402363. The next prime is 7402399. The reversal of 7402387 is 7832047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7832047 = 19 ⋅412213.

It is a cyclic number.

It is not a de Polignac number, because 7402387 - 2¹⁹ = 6878099 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

7402387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7406387) 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 3 ways as a sum of consecutive naturals, for example, 6763 + ... + 7780.

It is an arithmetic number, because the mean of its divisors is an integer number (1854360).

Almost surely, 2^7402387 is an apocalyptic number.

7402387 is a deficient number, since it is larger than the sum of its proper divisors (15053).

7402387 is a wasteful number, since it uses less digits than its factorization.

7402387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15052.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 7402387 is about 2720.7328056978. The cubic root of 7402387 is about 194.8904666469.

The spelling of 7402387 in words is "seven million, four hundred two thousand, three hundred eighty-seven".