145864847042 has 4 divisors (see below), whose sum is σ = 218797270566. Its totient is φ = 72932423520.

The previous prime is 145864847041. The next prime is 145864847059. The reversal of 145864847042 is 240748468541.

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., 133626071401 + 12238775641 = 365549^2 + 110629^2 .

It is a super-2 number, since 2×145864847042² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145864847041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36466211759 + ... + 36466211762.

Almost surely, 2^145864847042 is an apocalyptic number.

145864847042 is a deficient number, since it is larger than the sum of its proper divisors (72932423524).

145864847042 is an equidigital number, since it uses as much as digits as its factorization.

145864847042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72932423523.

The product of its (nonzero) digits is 6881280, while the sum is 53.

The spelling of 145864847042 in words is "one hundred forty-five billion, eight hundred sixty-four million, eight hundred forty-seven thousand, forty-two".