1390126390 has 16 divisors (see below), whose sum is σ = 2502783360. Its totient is φ = 555927040.

The previous prime is 1390126369. The next prime is 1390126391. The reversal of 1390126390 is 936210931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390126391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42006 + ... + 67414.

It is an arithmetic number, because the mean of its divisors is an integer number (156423960).

Almost surely, 2^1390126390 is an apocalyptic number.

1390126390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390126390 is a deficient number, since it is larger than the sum of its proper divisors (1112656970).

1390126390 is a wasteful number, since it uses less digits than its factorization.

1390126390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30887.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 1390126390 is about 37284.3987480018. The cubic root of 1390126390 is about 1116.0528547099.

The spelling of 1390126390 in words is "one billion, three hundred ninety million, one hundred twenty-six thousand, three hundred ninety".