140421312 has 42 divisors (see below), whose sum is σ = 402493988. Its totient is φ = 46806912.

The previous prime is 140421311. The next prime is 140421313. The reversal of 140421312 is 213124041.

It is an interprime number because it is at equal distance from previous prime (140421311) and next prime (140421313).

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

It is not an unprimeable number, because it can be changed into a prime (140421311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121318 + ... + 122469.

Almost surely, 2^140421312 is an apocalyptic number.

140421312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140421312 is an abundant number, since it is smaller than the sum of its proper divisors (262072676).

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

140421312 is a wasteful number, since it uses less digits than its factorization.

140421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243805 (or 243792 counting only the distinct ones).

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

The square root of 140421312 is about 11849.9498733117. The cubic root of 140421312 is about 519.7697600048.

Adding to 140421312 its reverse (213124041), we get a palindrome (353545353).

It can be divided in two parts, 1404213 and 12, that added together give a square (1404225 = 1185²).

The spelling of 140421312 in words is "one hundred forty million, four hundred twenty-one thousand, three hundred twelve".