140340046 has 32 divisors (see below), whose sum is σ = 268570368. Its totient is φ = 53403840.

The previous prime is 140340037. The next prime is 140340047. The reversal of 140340046 is 640043041.

It is a happy number.

It is a super-2 number, since 2×140340046² = 39390657022564232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 140339999 and 140340026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140340047) 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, 3975 + ... + 17218.

It is an arithmetic number, because the mean of its divisors is an integer number (8392824).

Almost surely, 2^140340046 is an apocalyptic number.

140340046 is a deficient number, since it is larger than the sum of its proper divisors (128230322).

140340046 is a wasteful number, since it uses less digits than its factorization.

140340046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21256.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140340046 is about 11846.5204174053. The cubic root of 140340046 is about 519.6694719033.

Adding to 140340046 its reverse (640043041), we get a palindrome (780383087).

The spelling of 140340046 in words is "one hundred forty million, three hundred forty thousand, forty-six".