140473121 has 16 divisors (see below), whose sum is σ = 152076288. Its totient is φ = 129373200.

The previous prime is 140473111. The next prime is 140473163. The reversal of 140473121 is 121374041.

It is a happy number.

140473121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140473121 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 Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140473111) 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, 192860 + ... + 193586.

It is an arithmetic number, because the mean of its divisors is an integer number (9504768).

Almost surely, 2^140473121 is an apocalyptic number.

It is an amenable number.

140473121 is a deficient number, since it is larger than the sum of its proper divisors (11603167).

140473121 is a wasteful number, since it uses less digits than its factorization.

140473121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 140473121 is about 11852.1357147140. The cubic root of 140473121 is about 519.8336758496.

The spelling of 140473121 in words is "one hundred forty million, four hundred seventy-three thousand, one hundred twenty-one".