42205370 has 8 divisors (see below), whose sum is σ = 75969684. Its totient is φ = 16882144.

The previous prime is 42205369. The next prime is 42205381. The reversal of 42205370 is 7350224.

It can be written as a sum of positive squares in 2 ways, for example, as 40538689 + 1666681 = 6367^2 + 1291^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2110259 + ... + 2110278.

Almost surely, 2^42205370 is an apocalyptic number.

42205370 is a deficient number, since it is larger than the sum of its proper divisors (33764314).

42205370 is a wasteful number, since it uses less digits than its factorization.

42205370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220544.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 42205370 is about 6496.5660159811. The cubic root of 42205370 is about 348.1683082891.

Adding to 42205370 its reverse (7350224), we get a palindrome (49555594).

The spelling of 42205370 in words is "forty-two million, two hundred five thousand, three hundred seventy".