140540434 has 32 divisors (see below), whose sum is σ = 221149440. Its totient is φ = 66937728.

The previous prime is 140540431. The next prime is 140540483. The reversal of 140540434 is 434045041.

It is a super-2 number, since 2×140540434² = 39503227177816712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140540399 and 140540408.

It is not an unprimeable number, because it can be changed into a prime (140540431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895084 + ... + 895240.

It is an arithmetic number, because the mean of its divisors is an integer number (6910920).

Almost surely, 2^140540434 is an apocalyptic number.

140540434 is a deficient number, since it is larger than the sum of its proper divisors (80609006).

140540434 is a wasteful number, since it uses less digits than its factorization.

140540434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 140540434 is about 11854.9750737823. The cubic root of 140540434 is about 519.9166952350.

Adding to 140540434 its reverse (434045041), we get a palindrome (574585475).

The spelling of 140540434 in words is "one hundred forty million, five hundred forty thousand, four hundred thirty-four".