140406123 has 32 divisors (see below), whose sum is σ = 220711680. Its totient is φ = 78272640.

The previous prime is 140406113. The next prime is 140406131. The reversal of 140406123 is 321604041.

It is not a de Polignac number, because 140406123 - 2⁴ = 140406107 is a prime.

It is a super-2 number, since 2×140406123² = 39427758751782258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140406123.

It is not an unprimeable number, because it can be changed into a prime (140406113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218040 + ... + 218682.

It is an arithmetic number, because the mean of its divisors is an integer number (6897240).

Almost surely, 2^140406123 is an apocalyptic number.

140406123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

140406123 is a deficient number, since it is larger than the sum of its proper divisors (80305557).

140406123 is a wasteful number, since it uses less digits than its factorization.

140406123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 140406123 is about 11849.3089671930. The cubic root of 140406123 is about 519.7510186247.

The spelling of 140406123 in words is "one hundred forty million, four hundred six thousand, one hundred twenty-three".