64843142 has 32 divisors (see below), whose sum is σ = 120977472. Its totient is φ = 25380864.

The previous prime is 64843133. The next prime is 64843147. The reversal of 64843142 is 24134846.

It is a junction number, because it is equal to n+sod(n) for n = 64843099 and 64843108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64843147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15818 + ... + 19490.

It is an arithmetic number, because the mean of its divisors is an integer number (3780546).

Almost surely, 2^64843142 is an apocalyptic number.

64843142 is a deficient number, since it is larger than the sum of its proper divisors (56134330).

64843142 is a wasteful number, since it uses less digits than its factorization.

64843142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792.

The product of its digits is 18432, while the sum is 32.

The square root of 64843142 is about 8052.5239521531. The cubic root of 64843142 is about 401.7488881647.

Adding to 64843142 its reverse (24134846), we get a palindrome (88977988).

The spelling of 64843142 in words is "sixty-four million, eight hundred forty-three thousand, one hundred forty-two".