143642919346 has 4 divisors (see below), whose sum is σ = 215464379022. Its totient is φ = 71821459672.

The previous prime is 143642919311. The next prime is 143642919349. The reversal of 143642919346 is 643919246341.

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., 138797228025 + 4845691321 = 372555^2 + 69611^2 .

It is a super-2 number, since 2×143642919346² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143642919293 and 143642919302.

It is not an unprimeable number, because it can be changed into a prime (143642919349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35910729835 + ... + 35910729838.

Almost surely, 2^143642919346 is an apocalyptic number.

143642919346 is a deficient number, since it is larger than the sum of its proper divisors (71821459676).

143642919346 is an equidigital number, since it uses as much as digits as its factorization.

143642919346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71821459675.

The product of its digits is 3359232, while the sum is 52.

The spelling of 143642919346 in words is "one hundred forty-three billion, six hundred forty-two million, nine hundred nineteen thousand, three hundred forty-six".