42430522 has 4 divisors (see below), whose sum is σ = 63645786. Its totient is φ = 21215260.

The previous prime is 42430517. The next prime is 42430543. The reversal of 42430522 is 22503424.

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., 21261321 + 21169201 = 4611^2 + 4601^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 42430493 and 42430502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607629 + ... + 10607632.

Almost surely, 2^42430522 is an apocalyptic number.

42430522 is a deficient number, since it is larger than the sum of its proper divisors (21215264).

42430522 is a wasteful number, since it uses less digits than its factorization.

42430522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21215263.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42430522 is about 6513.8715062549. The cubic root of 42430522 is about 348.7863323787.

Adding to 42430522 its reverse (22503424), we get a palindrome (64933946).

It can be divided in two parts, 424 and 30522, that multiplied together give a triangular number (12941328 = T₅₀₈₇).

The spelling of 42430522 in words is "forty-two million, four hundred thirty thousand, five hundred twenty-two".