42754945 has 4 divisors (see below), whose sum is σ = 51305940. Its totient is φ = 34203952.

The previous prime is 42754937. The next prime is 42754963. The reversal of 42754945 is 54945724.

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 11316496 + 31438449 = 3364^2 + 5607^2 .

It is a cyclic number.

It is not a de Polignac number, because 42754945 - 2³ = 42754937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42754898 and 42754907.

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, 4275490 + ... + 4275499.

It is an arithmetic number, because the mean of its divisors is an integer number (12826485).

Almost surely, 2^42754945 is an apocalyptic number.

It is an amenable number.

42754945 is a deficient number, since it is larger than the sum of its proper divisors (8550995).

42754945 is an equidigital number, since it uses as much as digits as its factorization.

42754945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8550994.

The product of its digits is 201600, while the sum is 40.

The square root of 42754945 is about 6538.7265579775. The cubic root of 42754945 is about 349.6730143384.

The spelling of 42754945 in words is "forty-two million, seven hundred fifty-four thousand, nine hundred forty-five".