1390298742 has 192 divisors, whose sum is σ = 3809594880. Its totient is φ = 371195136.

The previous prime is 1390298731. The next prime is 1390298803. The reversal of 1390298742 is 2478920931.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 8855328 + ... + 8855484.

It is an arithmetic number, because the mean of its divisors is an integer number (19841640).

Almost surely, 2^1390298742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390298742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1904797440).

1390298742 is an abundant number, since it is smaller than the sum of its proper divisors (2419296138).

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

1390298742 is a wasteful number, since it uses less digits than its factorization.

1390298742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1390298742 is about 37286.7099916311. The cubic root of 1390298742 is about 1116.0989766535.

The spelling of 1390298742 in words is "one billion, three hundred ninety million, two hundred ninety-eight thousand, seven hundred forty-two".