1390245120 has 720 divisors, whose sum is σ = 5769574272. Its totient is φ = 316293120.

The previous prime is 1390245113. The next prime is 1390245121. The reversal of 1390245120 is 215420931.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390245121) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 26231014 + ... + 26231066.

Almost surely, 2^1390245120 is an apocalyptic number.

1390245120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390245120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2884787136).

1390245120 is an abundant number, since it is smaller than the sum of its proper divisors (4379329152).

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

1390245120 is a wasteful number, since it uses less digits than its factorization.

1390245120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1390245120 is about 37285.9909349343. The cubic root of 1390245120 is about 1116.0846276442.

The spelling of 1390245120 in words is "one billion, three hundred ninety million, two hundred forty-five thousand, one hundred twenty".