42211245 has 8 divisors (see below), whose sum is σ = 67538016. Its totient is φ = 22512656.

The previous prime is 42211219. The next prime is 42211259. The reversal of 42211245 is 54211224.

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

It is a cyclic number.

It is not a de Polignac number, because 42211245 - 2⁹ = 42210733 is a prime.

It is a super-5 number, since 5×42211245⁵ (a number of 39 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407027 + ... + 1407056.

It is an arithmetic number, because the mean of its divisors is an integer number (8442252).

Almost surely, 2^42211245 is an apocalyptic number.

It is an amenable number.

42211245 is a deficient number, since it is larger than the sum of its proper divisors (25326771).

42211245 is a wasteful number, since it uses less digits than its factorization.

42211245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814091.

The product of its digits is 640, while the sum is 21.

The square root of 42211245 is about 6497.0181622033. The cubic root of 42211245 is about 348.1844625834.

Subtracting from 42211245 its sum of digits (21), we obtain a palindrome (42211224).

Adding to 42211245 its reverse (54211224), we get a palindrome (96422469).

The spelling of 42211245 in words is "forty-two million, two hundred eleven thousand, two hundred forty-five".