51142043 has 4 divisors (see below), whose sum is σ = 51205008. Its totient is φ = 51079080.

The previous prime is 51142031. The next prime is 51142061. The reversal of 51142043 is 34024115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51142043 - 2²⁰ = 50093467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51142073) 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, 30248 + ... + 31893.

It is an arithmetic number, because the mean of its divisors is an integer number (12801252).

Almost surely, 2^51142043 is an apocalyptic number.

51142043 is a deficient number, since it is larger than the sum of its proper divisors (62965).

51142043 is an equidigital number, since it uses as much as digits as its factorization.

51142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62964.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 51142043 is about 7151.3665127722. The cubic root of 51142043 is about 371.1869430782.

Adding to 51142043 its reverse (34024115), we get a palindrome (85166158).

The spelling of 51142043 in words is "fifty-one million, one hundred forty-two thousand, forty-three".