42734397 has 4 divisors (see below), whose sum is σ = 56979200. Its totient is φ = 28489596.

The previous prime is 42734383. The next prime is 42734407. The reversal of 42734397 is 79343724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42734397 - 2⁴ = 42734381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42734317) 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, 7122397 + ... + 7122402.

It is an arithmetic number, because the mean of its divisors is an integer number (14244800).

Almost surely, 2^42734397 is an apocalyptic number.

It is an amenable number.

42734397 is a deficient number, since it is larger than the sum of its proper divisors (14244803).

42734397 is a wasteful number, since it uses less digits than its factorization.

42734397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14244802.

The product of its digits is 127008, while the sum is 39.

The square root of 42734397 is about 6537.1551151858. The cubic root of 42734397 is about 349.6169878175.

The spelling of 42734397 in words is "forty-two million, seven hundred thirty-four thousand, three hundred ninety-seven".