140402853 has 6 divisors (see below), whose sum is σ = 202804134. Its totient is φ = 93601896.

The previous prime is 140402851. The next prime is 140402861. The reversal of 140402853 is 358204041.

It can be written as a sum of positive squares in only one way, i.e., 122611329 + 17791524 = 11073^2 + 4218^2 .

It is not a de Polignac number, because 140402853 - 2¹ = 140402851 is a prime.

It is a super-2 number, since 2×140402853² = 39425922261079218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140402851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7800150 + ... + 7800167.

It is an arithmetic number, because the mean of its divisors is an integer number (33800689).

Almost surely, 2^140402853 is an apocalyptic number.

It is an amenable number.

140402853 is a deficient number, since it is larger than the sum of its proper divisors (62401281).

140402853 is a wasteful number, since it uses less digits than its factorization.

140402853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15600323 (or 15600320 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 140402853 is about 11849.1709836596. The cubic root of 140402853 is about 519.7469836653.

Adding to 140402853 its reverse (358204041), we get a palindrome (498606894).

The spelling of 140402853 in words is "one hundred forty million, four hundred two thousand, eight hundred fifty-three".