73015142 has 4 divisors (see below), whose sum is σ = 109522716. Its totient is φ = 36507570.

The previous prime is 73015139. The next prime is 73015211. The reversal of 73015142 is 24151037.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×73015142² = 10662421922560328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18253784 + ... + 18253787.

It is an arithmetic number, because the mean of its divisors is an integer number (27380679).

Almost surely, 2^73015142 is an apocalyptic number.

73015142 is a deficient number, since it is larger than the sum of its proper divisors (36507574).

73015142 is a wasteful number, since it uses less digits than its factorization.

73015142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36507573.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 73015142 is about 8544.8898178970. The cubic root of 73015142 is about 417.9628142404.

Adding to 73015142 its reverse (24151037), we get a palindrome (97166179).

The spelling of 73015142 in words is "seventy-three million, fifteen thousand, one hundred forty-two".