34742147 has 4 divisors (see below), whose sum is σ = 37900536. Its totient is φ = 31583760.

The previous prime is 34742143. The next prime is 34742153. The reversal of 34742147 is 74124743.

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

It is a cyclic number.

It is not a de Polignac number, because 34742147 - 2² = 34742143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34742143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579178 + ... + 1579199.

It is an arithmetic number, because the mean of its divisors is an integer number (9475134).

Almost surely, 2^34742147 is an apocalyptic number.

34742147 is a deficient number, since it is larger than the sum of its proper divisors (3158389).

34742147 is a wasteful number, since it uses less digits than its factorization.

34742147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158388.

The product of its digits is 18816, while the sum is 32.

The square root of 34742147 is about 5894.2469408738. The cubic root of 34742147 is about 326.3013604593.

The spelling of 34742147 in words is "thirty-four million, seven hundred forty-two thousand, one hundred forty-seven".