140306423 has 8 divisors (see below), whose sum is σ = 151363728. Its totient is φ = 129560704.

The previous prime is 140306407. The next prime is 140306429. The reversal of 140306423 is 324603041.

It is a happy number.

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 140306423 - 2⁴ = 140306407 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 (140306429) 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, 76961 + ... + 78762.

It is an arithmetic number, because the mean of its divisors is an integer number (18920466).

Almost surely, 2^140306423 is an apocalyptic number.

140306423 is a deficient number, since it is larger than the sum of its proper divisors (11057305).

140306423 is a wasteful number, since it uses less digits than its factorization.

140306423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155793.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 140306423 is about 11845.1012237127. The cubic root of 140306423 is about 519.6279673750.

Adding to 140306423 its reverse (324603041), we get a palindrome (464909464).

The spelling of 140306423 in words is "one hundred forty million, three hundred six thousand, four hundred twenty-three".