29742151 has 4 divisors (see below), whose sum is σ = 31035312. Its totient is φ = 28448992.

The previous prime is 29742143. The next prime is 29742173. The reversal of 29742151 is 15124792.

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 29742151 - 2³ = 29742143 is a prime.

It is a super-2 number, since 2×29742151² = 1769191092213602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29742851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646546 + ... + 646591.

It is an arithmetic number, because the mean of its divisors is an integer number (7758828).

Almost surely, 2^29742151 is an apocalyptic number.

29742151 is a deficient number, since it is larger than the sum of its proper divisors (1293161).

29742151 is a wasteful number, since it uses less digits than its factorization.

29742151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293160.

The product of its digits is 5040, while the sum is 31.

The square root of 29742151 is about 5453.6364932034. The cubic root of 29742151 is about 309.8304692197.

The spelling of 29742151 in words is "twenty-nine million, seven hundred forty-two thousand, one hundred fifty-one".