1375646142 has 96 divisors (see below), whose sum is σ = 3111644160. Its totient is φ = 404801280.

The previous prime is 1375646141. The next prime is 1375646201. The reversal of 1375646142 is 2416465731.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1375646142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375646141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3363234 + ... + 3363642.

It is an arithmetic number, because the mean of its divisors is an integer number (32412960).

Almost surely, 2^1375646142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375646142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555822080).

1375646142 is an abundant number, since it is smaller than the sum of its proper divisors (1735998018).

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

1375646142 is a wasteful number, since it uses less digits than its factorization.

1375646142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 565 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 1375646142 is about 37089.7039891127. The cubic root of 1375646142 is about 1112.1642006676.

The spelling of 1375646142 in words is "one billion, three hundred seventy-five million, six hundred forty-six thousand, one hundred forty-two".