1342639418 has 4 divisors (see below), whose sum is σ = 2013959130. Its totient is φ = 671319708.

The previous prime is 1342639399. The next prime is 1342639471. The reversal of 1342639418 is 8149362431.

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

It can be written as a sum of positive squares in only one way, i.e., 1292186809 + 50452609 = 35947^2 + 7103^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335659853 + ... + 335659856.

Almost surely, 2^1342639418 is an apocalyptic number.

1342639418 is a deficient number, since it is larger than the sum of its proper divisors (671319712).

1342639418 is an equidigital number, since it uses as much as digits as its factorization.

1342639418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671319711.

The product of its digits is 124416, while the sum is 41.

The square root of 1342639418 is about 36642.0444025712. The cubic root of 1342639418 is about 1103.1971497219.

The spelling of 1342639418 in words is "one billion, three hundred forty-two million, six hundred thirty-nine thousand, four hundred eighteen".