42047155 has 8 divisors (see below), whose sum is σ = 50497632. Its totient is φ = 33610368.

The previous prime is 42047147. The next prime is 42047167. The reversal of 42047155 is 55174024.

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 42047155 - 2³ = 42047147 is a prime.

It is a Duffinian 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, 5419 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (6312204).

Almost surely, 2^42047155 is an apocalyptic number.

42047155 is a deficient number, since it is larger than the sum of its proper divisors (8450477).

42047155 is a wasteful number, since it uses less digits than its factorization.

42047155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 42047155 is about 6484.3777650597. The cubic root of 42047155 is about 347.7327047515.

The spelling of 42047155 in words is "forty-two million, forty-seven thousand, one hundred fifty-five".