51342132 has 12 divisors (see below), whose sum is σ = 119798336. Its totient is φ = 17114040.

The previous prime is 51342121. The next prime is 51342133. The reversal of 51342132 is 23124315.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 51342099 and 51342108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51342133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2139244 + ... + 2139267.

Almost surely, 2^51342132 is an apocalyptic number.

It is an amenable number.

51342132 is an abundant number, since it is smaller than the sum of its proper divisors (68456204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51342132 is a wasteful number, since it uses less digits than its factorization.

51342132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278518 (or 4278516 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 51342132 is about 7165.3424202895. The cubic root of 51342132 is about 371.6703925125.

Adding to 51342132 its reverse (23124315), we get a palindrome (74466447).

The spelling of 51342132 in words is "fifty-one million, three hundred forty-two thousand, one hundred thirty-two".