42751322 has 4 divisors (see below), whose sum is σ = 64126986. Its totient is φ = 21375660.

The previous prime is 42751309. The next prime is 42751327. The reversal of 42751322 is 22315724.

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

It can be written as a sum of positive squares in only one way, i.e., 31933801 + 10817521 = 5651^2 + 3289^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42751291 and 42751300.

It is not an unprimeable number, because it can be changed into a prime (42751327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10687829 + ... + 10687832.

Almost surely, 2^42751322 is an apocalyptic number.

42751322 is a deficient number, since it is larger than the sum of its proper divisors (21375664).

42751322 is a wasteful number, since it uses less digits than its factorization.

42751322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21375663.

The product of its digits is 3360, while the sum is 26.

The square root of 42751322 is about 6538.4495103962. The cubic root of 42751322 is about 349.6631371096.

The spelling of 42751322 in words is "forty-two million, seven hundred fifty-one thousand, three hundred twenty-two".