140021334 has 12 divisors (see below), whose sum is σ = 303379596. Its totient is φ = 46673772.

The previous prime is 140021311. The next prime is 140021341. The reversal of 140021334 is 433120041.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7778963 = 140021334 / (1 + 4 + 0 + 0 + 2 + 1 + 3 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3889464 + ... + 3889499.

It is an arithmetic number, because the mean of its divisors is an integer number (25281633).

Almost surely, 2^140021334 is an apocalyptic number.

140021334 is an abundant number, since it is smaller than the sum of its proper divisors (163358262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140021334 is a wasteful number, since it uses less digits than its factorization.

140021334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7778971 (or 7778968 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140021334 is about 11833.0610579004. The cubic root of 140021334 is about 519.2757842429.

Adding to 140021334 its reverse (433120041), we get a palindrome (573141375).

The spelling of 140021334 in words is "one hundred forty million, twenty-one thousand, three hundred thirty-four".