64142133 has 16 divisors (see below), whose sum is σ = 93444096. Its totient is φ = 38813040.

The previous prime is 64142129. The next prime is 64142149. The reversal of 64142133 is 33124146.

It is not a de Polignac number, because 64142133 - 2² = 64142129 is a prime.

It is a super-2 number, since 2×64142133² = 8228426451579378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64142153) 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, 28860 + ... + 31002.

It is an arithmetic number, because the mean of its divisors is an integer number (5840256).

Almost surely, 2^64142133 is an apocalyptic number.

It is an amenable number.

64142133 is a deficient number, since it is larger than the sum of its proper divisors (29301963).

64142133 is a wasteful number, since it uses less digits than its factorization.

64142133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064.

The product of its digits is 1728, while the sum is 24.

The square root of 64142133 is about 8008.8783858915. The cubic root of 64142133 is about 400.2958914833.

Adding to 64142133 its reverse (33124146), we get a palindrome (97266279).

The spelling of 64142133 in words is "sixty-four million, one hundred forty-two thousand, one hundred thirty-three".