140530026 has 32 divisors (see below), whose sum is σ = 345921408. Its totient is φ = 37062720.

The previous prime is 140529979. The next prime is 140530051. The reversal of 140530026 is 620035041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140529984 and 140530011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128145 + ... + 129236.

It is an arithmetic number, because the mean of its divisors is an integer number (10810044).

Almost surely, 2^140530026 is an apocalyptic number.

140530026 is an abundant number, since it is smaller than the sum of its proper divisors (205391382).

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

140530026 is a wasteful number, since it uses less digits than its factorization.

140530026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257406.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 140530026 is about 11854.5360938334. The cubic root of 140530026 is about 519.9038604316.

Adding to 140530026 its reverse (620035041), we get a palindrome (760565067).

It can be divided in two parts, 1405300 and 26, that added together give a triangular number (1405326 = T₁₆₇₆).

The spelling of 140530026 in words is "one hundred forty million, five hundred thirty thousand, twenty-six".