64158442 has 8 divisors (see below), whose sum is σ = 101898756. Its totient is φ = 30192192.

The previous prime is 64158389. The next prime is 64158443. The reversal of 64158442 is 24485146.

It can be written as a sum of positive squares in 2 ways, for example, as 54922921 + 9235521 = 7411^2 + 3039^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 1887013 = 64158442 / (6 + 4 + 1 + 5 + 8 + 4 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 64158398 and 64158407.

It is not an unprimeable number, because it can be changed into a prime (64158443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943473 + ... + 943540.

Almost surely, 2^64158442 is an apocalyptic number.

64158442 is a deficient number, since it is larger than the sum of its proper divisors (37740314).

64158442 is a wasteful number, since it uses less digits than its factorization.

64158442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887032.

The product of its digits is 30720, while the sum is 34.

The square root of 64158442 is about 8009.8965037009. The cubic root of 64158442 is about 400.3298154796.

The spelling of 64158442 in words is "sixty-four million, one hundred fifty-eight thousand, four hundred forty-two".