140534420 has 24 divisors (see below), whose sum is σ = 317824584. Its totient is φ = 51889536.

The previous prime is 140534413. The next prime is 140534441. The reversal of 140534420 is 24435041.

It can be written as a sum of positive squares in 4 ways, for example, as 64516 + 140469904 = 254^2 + 11852^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269999 + ... + 270518.

It is an arithmetic number, because the mean of its divisors is an integer number (13242691).

Almost surely, 2^140534420 is an apocalyptic number.

140534420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140534420 is an abundant number, since it is smaller than the sum of its proper divisors (177290164).

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

140534420 is a wasteful number, since it uses less digits than its factorization.

140534420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540539 (or 540537 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140534420 is about 11854.7214222857. The cubic root of 140534420 is about 519.9092790452.

Adding to 140534420 its reverse (24435041), we get a palindrome (164969461).

The spelling of 140534420 in words is "one hundred forty million, five hundred thirty-four thousand, four hundred twenty".