140021046 has 24 divisors (see below), whose sum is σ = 330959304. Its totient is φ = 42430560.

The previous prime is 140021023. The next prime is 140021107. The reversal of 140021046 is 640120041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353391 + ... + 353786.

It is an arithmetic number, because the mean of its divisors is an integer number (13789971).

Almost surely, 2^140021046 is an apocalyptic number.

140021046 is an abundant number, since it is smaller than the sum of its proper divisors (190938258).

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

140021046 is a wasteful number, since it uses less digits than its factorization.

140021046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707196 (or 707193 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140021046 is about 11833.0488886001. The cubic root of 140021046 is about 519.2754282221.

Adding to 140021046 its reverse (640120041), we get a palindrome (780141087).

The spelling of 140021046 in words is "one hundred forty million, twenty-one thousand, forty-six".