73142040 has 32 divisors (see below), whose sum is σ = 219426480. Its totient is φ = 19504512.

The previous prime is 73142029. The next prime is 73142053. The reversal of 73142040 is 4024137.

It is a junction number, because it is equal to n+sod(n) for n = 73141998 and 73142016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304639 + ... + 304878.

Almost surely, 2^73142040 is an apocalyptic number.

It is an amenable number.

73142040 is an abundant number, since it is smaller than the sum of its proper divisors (146284440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73142040 is a wasteful number, since it uses less digits than its factorization.

73142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609531 (or 609527 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 73142040 is about 8552.3119681172. The cubic root of 73142040 is about 418.2048094709.

Adding to 73142040 its reverse (4024137), we get a palindrome (77166177).

The spelling of 73142040 in words is "seventy-three million, one hundred forty-two thousand, forty".