42047045 has 4 divisors (see below), whose sum is σ = 50456460. Its totient is φ = 33637632.

The previous prime is 42047023. The next prime is 42047087. The reversal of 42047045 is 54074024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 30096196 = 3457^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 42047045 - 2¹⁴ = 42030661 is a prime.

It is a super-3 number, since 3×42047045³ (a number of 24 digits) contains 333 as substring.

It is a congruent 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, 4204700 + ... + 4204709.

It is an arithmetic number, because the mean of its divisors is an integer number (12614115).

Almost surely, 2^42047045 is an apocalyptic number.

It is an amenable number.

42047045 is a deficient number, since it is larger than the sum of its proper divisors (8409415).

42047045 is an equidigital number, since it uses as much as digits as its factorization.

42047045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8409414.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42047045 is about 6484.3692831300. The cubic root of 42047045 is about 347.7324015156.

The spelling of 42047045 in words is "forty-two million, forty-seven thousand, forty-five".