73242151 has 4 divisors (see below), whose sum is σ = 74442904. Its totient is φ = 72041400.

The previous prime is 73242107. The next prime is 73242157. The reversal of 73242151 is 15124237.

It is a happy number.

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 73242151 - 2⁹ = 73241639 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 (73242157) 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, 600285 + ... + 600406.

It is an arithmetic number, because the mean of its divisors is an integer number (18610726).

Almost surely, 2^73242151 is an apocalyptic number.

73242151 is a deficient number, since it is larger than the sum of its proper divisors (1200753).

73242151 is a wasteful number, since it uses less digits than its factorization.

73242151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200752.

The product of its digits is 1680, while the sum is 25.

The square root of 73242151 is about 8558.1628285515. The cubic root of 73242151 is about 418.3955242993.

Adding to 73242151 its reverse (15124237), we get a palindrome (88366388).

The spelling of 73242151 in words is "seventy-three million, two hundred forty-two thousand, one hundred fifty-one".