140403155 has 8 divisors (see below), whose sum is σ = 175809312. Its totient is φ = 107438848.

The previous prime is 140403149. The next prime is 140403157. The reversal of 140403155 is 551304041.

140403155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140403155 - 2¹² = 140399059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140403155.

It is not an unprimeable number, because it can be changed into a prime (140403157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610334 + ... + 610563.

It is an arithmetic number, because the mean of its divisors is an integer number (21976164).

Almost surely, 2^140403155 is an apocalyptic number.

140403155 is a deficient number, since it is larger than the sum of its proper divisors (35406157).

140403155 is a wasteful number, since it uses less digits than its factorization.

140403155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220925.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 140403155 is about 11849.1837271603. The cubic root of 140403155 is about 519.7473563155.

Adding to 140403155 its reverse (551304041), we get a palindrome (691707196).

The spelling of 140403155 in words is "one hundred forty million, four hundred three thousand, one hundred fifty-five".