1397027142 has 96 divisors (see below), whose sum is σ = 3632559840. Its totient is φ = 396809280.

The previous prime is 1397027123. The next prime is 1397027161. The reversal of 1397027142 is 2417207931.

It is an interprime number because it is at equal distance from previous prime (1397027123) and next prime (1397027161).

It is a junction number, because it is equal to n+sod(n) for n = 1397027097 and 1397027106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 477468 + ... + 480384.

It is an arithmetic number, because the mean of its divisors is an integer number (37839165).

Almost surely, 2^1397027142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397027142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816279920).

1397027142 is an abundant number, since it is smaller than the sum of its proper divisors (2235532698).

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

1397027142 is a wasteful number, since it uses less digits than its factorization.

1397027142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123 (or 3110 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1397027142 is about 37376.8262697624. The cubic root of 1397027142 is about 1117.8965468046.

The spelling of 1397027142 in words is "one billion, three hundred ninety-seven million, twenty-seven thousand, one hundred forty-two".