7123144490 has 32 divisors (see below), whose sum is σ = 15985448064. Its totient is φ = 2220200640.

The previous prime is 7123144481. The next prime is 7123144493. The reversal of 7123144490 is 944413217.

It is a happy number.

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 7123144490.

It is not an unprimeable number, because it can be changed into a prime (7123144493) 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, 4624649 + ... + 4626188.

It is an arithmetic number, because the mean of its divisors is an integer number (499545252).

Almost surely, 2^7123144490 is an apocalyptic number.

7123144490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7123144490 is an abundant number, since it is smaller than the sum of its proper divisors (8862303574).

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

7123144490 is a wasteful number, since it uses less digits than its factorization.

7123144490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250862.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 7123144490 is about 84398.7232723339. The cubic root of 7123144490 is about 1924.0835117832.

The spelling of 7123144490 in words is "seven billion, one hundred twenty-three million, one hundred forty-four thousand, four hundred ninety".