140520007 has 4 divisors (see below), whose sum is σ = 140733256. Its totient is φ = 140306760.

The previous prime is 140519999. The next prime is 140520031. The reversal of 140520007 is 700025041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140520007 - 2³ = 140519999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140520047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105633 + ... + 106954.

It is an arithmetic number, because the mean of its divisors is an integer number (35183314).

Almost surely, 2^140520007 is an apocalyptic number.

140520007 is a deficient number, since it is larger than the sum of its proper divisors (213249).

140520007 is an equidigital number, since it uses as much as digits as its factorization.

140520007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213248.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 140520007 is about 11854.1135054461. The cubic root of 140520007 is about 519.8915047315.

Adding to 140520007 its reverse (700025041), we get a palindrome (840545048).

It can be divided in two parts, 1405 and 20007, that added together give a palindrome (21412).

The spelling of 140520007 in words is "one hundred forty million, five hundred twenty thousand, seven".