140406562 has 4 divisors (see below), whose sum is σ = 210609846. Its totient is φ = 70203280.

The previous prime is 140406551. The next prime is 140406569. The reversal of 140406562 is 265604041.

140406562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 136913401 + 3493161 = 11701^2 + 1869^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140406562.

It is not an unprimeable number, because it can be changed into a prime (140406569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35101639 + ... + 35101642.

Almost surely, 2^140406562 is an apocalyptic number.

140406562 is a deficient number, since it is larger than the sum of its proper divisors (70203284).

140406562 is an equidigital number, since it uses as much as digits as its factorization.

140406562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70203283.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140406562 is about 11849.3274914655. The cubic root of 140406562 is about 519.7515603163.

It can be divided in two parts, 14040 and 6562, that added together give a palindrome (20602).

The spelling of 140406562 in words is "one hundred forty million, four hundred six thousand, five hundred sixty-two".