34742251 has 4 divisors (see below), whose sum is σ = 34774312. Its totient is φ = 34710192.

The previous prime is 34742243. The next prime is 34742287. The reversal of 34742251 is 15224743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15224743 = 71 ⋅214433.

It is a cyclic number.

It is not a de Polignac number, because 34742251 - 2³ = 34742243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34742221) 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, 14346 + ... + 16591.

It is an arithmetic number, because the mean of its divisors is an integer number (8693578).

Almost surely, 2^34742251 is an apocalyptic number.

34742251 is a deficient number, since it is larger than the sum of its proper divisors (32061).

34742251 is a wasteful number, since it uses less digits than its factorization.

34742251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32060.

The product of its digits is 6720, while the sum is 28.

The square root of 34742251 is about 5894.2557630290. The cubic root of 34742251 is about 326.3016860514.

Adding to 34742251 its reverse (15224743), we get a palindrome (49966994).

The spelling of 34742251 in words is "thirty-four million, seven hundred forty-two thousand, two hundred fifty-one".