140213454 has 16 divisors (see below), whose sum is σ = 286948992. Its totient is φ = 45650808.

The previous prime is 140213449. The next prime is 140213459. The reversal of 140213454 is 454312041.

It is an interprime number because it is at equal distance from previous prime (140213449) and next prime (140213459).

It is a super-2 number, since 2×140213454² = 39319625365220232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140213459) 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, 271474 + ... + 271989.

It is an arithmetic number, because the mean of its divisors is an integer number (17934312).

Almost surely, 2^140213454 is an apocalyptic number.

140213454 is an abundant number, since it is smaller than the sum of its proper divisors (146735538).

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

140213454 is a wasteful number, since it uses less digits than its factorization.

140213454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543511.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 140213454 is about 11841.1762084685. The cubic root of 140213454 is about 519.5131710943.

Adding to 140213454 its reverse (454312041), we get a palindrome (594525495).

The spelling of 140213454 in words is "one hundred forty million, two hundred thirteen thousand, four hundred fifty-four".