1399219142 has 4 divisors (see below), whose sum is σ = 2098828716. Its totient is φ = 699609570.

The previous prime is 1399219141. The next prime is 1399219163. The reversal of 1399219142 is 2419129931.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×1399219142³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1399219142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399219141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349804784 + ... + 349804787.

It is an arithmetic number, because the mean of its divisors is an integer number (524707179).

Almost surely, 2^1399219142 is an apocalyptic number.

1399219142 is a deficient number, since it is larger than the sum of its proper divisors (699609574).

1399219142 is an equidigital number, since it uses as much as digits as its factorization.

1399219142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699609573.

The product of its digits is 34992, while the sum is 41.

The square root of 1399219142 is about 37406.1377583947. The cubic root of 1399219142 is about 1118.4809183511.

The spelling of 1399219142 in words is "one billion, three hundred ninety-nine million, two hundred nineteen thousand, one hundred forty-two".