42997611 has 4 divisors (see below), whose sum is σ = 57330152. Its totient is φ = 28665072.

The previous prime is 42997601. The next prime is 42997613. The reversal of 42997611 is 11679924.

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

It is not a de Polignac number, because 42997611 - 2⁵ = 42997579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42997611.

It is not an unprimeable number, because it can be changed into a prime (42997613) 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, 7166266 + ... + 7166271.

It is an arithmetic number, because the mean of its divisors is an integer number (14332538).

Almost surely, 2^42997611 is an apocalyptic number.

42997611 is a deficient number, since it is larger than the sum of its proper divisors (14332541).

42997611 is a wasteful number, since it uses less digits than its factorization.

42997611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14332540.

The product of its digits is 27216, while the sum is 39.

The square root of 42997611 is about 6557.2563622296. The cubic root of 42997611 is about 350.3333178426. Note that the first 4 decimals are identical.

The spelling of 42997611 in words is "forty-two million, nine hundred ninety-seven thousand, six hundred eleven".