71442149 has 8 divisors (see below), whose sum is σ = 73100160. Its totient is φ = 69803136.

The previous prime is 71442113. The next prime is 71442157. The reversal of 71442149 is 94124417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71442149 - 2⁸ = 71441893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71442179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3002 + ... + 12324.

It is an arithmetic number, because the mean of its divisors is an integer number (9137520).

Almost surely, 2^71442149 is an apocalyptic number.

71442149 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

71442149 is a deficient number, since it is larger than the sum of its proper divisors (1658011).

71442149 is an equidigital number, since it uses as much as digits as its factorization.

71442149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9499.

The product of its digits is 8064, while the sum is 32.

The square root of 71442149 is about 8452.3457690750. The cubic root of 71442149 is about 414.9395547519.

The spelling of 71442149 in words is "seventy-one million, four hundred forty-two thousand, one hundred forty-nine".