7420391090 has 32 divisors (see below), whose sum is σ = 15268901760. Its totient is φ = 2543451264.

The previous prime is 7420391071. The next prime is 7420391137. The reversal of 7420391090 is 901930247.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 7420391090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296609 + ... + 320651.

It is an arithmetic number, because the mean of its divisors is an integer number (477153180).

Almost surely, 2^7420391090 is an apocalyptic number.

7420391090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7420391090 is an abundant number, since it is smaller than the sum of its proper divisors (7848510670).

7420391090 is a wasteful number, since it uses less digits than its factorization.

7420391090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28466.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 7420391090 is about 86141.6919383408. The cubic root of 7420391090 is about 1950.4834295611.

The spelling of 7420391090 in words is "seven billion, four hundred twenty million, three hundred ninety-one thousand, ninety".