1642143265145 has 8 divisors (see below), whose sum is σ = 1970578803456. Its totient is φ = 1313710021936.

The previous prime is 1642143265127. The next prime is 1642143265159. The reversal of 1642143265145 is 5415623412461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1642143265145 - 2²² = 1642139070841 is a prime.

It is a super-2 number, since 2×1642143265145² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1642143265096 and 1642143265105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2427704 + ... + 3029526.

It is an arithmetic number, because the mean of its divisors is an integer number (246322350432).

Almost surely, 2^{1642143265145} is an apocalyptic number.

It is an amenable number.

1642143265145 is a deficient number, since it is larger than the sum of its proper divisors (328435538311).

1642143265145 is an equidigital number, since it uses as much as digits as its factorization.

1642143265145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147551.

The product of its digits is 691200, while the sum is 44.

The spelling of 1642143265145 in words is "one trillion, six hundred forty-two billion, one hundred forty-three million, two hundred sixty-five thousand, one hundred forty-five".