73140426 has 48 divisors (see below), whose sum is σ = 168480000. Its totient is φ = 22852224.

The previous prime is 73140383. The next prime is 73140469. The reversal of 73140426 is 62404137.

It is an interprime number because it is at equal distance from previous prime (73140383) and next prime (73140469).

It is a super-2 number, since 2×73140426² = 10699043830922952, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73140426.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146325 + ... + 146823.

It is an arithmetic number, because the mean of its divisors is an integer number (3510000).

Almost surely, 2^73140426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73140426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84240000).

73140426 is an abundant number, since it is smaller than the sum of its proper divisors (95339574).

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

73140426 is a wasteful number, since it uses less digits than its factorization.

73140426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 73140426 is about 8552.2176071473. The cubic root of 73140426 is about 418.2017333215.

The spelling of 73140426 in words is "seventy-three million, one hundred forty thousand, four hundred twenty-six".