40142403 has 24 divisors (see below), whose sum is σ = 67887456. Its totient is φ = 22377600.

The previous prime is 40142393. The next prime is 40142407. The reversal of 40142403 is 30424104.

It is not a de Polignac number, because 40142403 - 2⁴ = 40142387 is a prime.

It is a super-2 number, since 2×40142403² = 3222825037228818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40142407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5188 + ... + 10353.

It is an arithmetic number, because the mean of its divisors is an integer number (2828644).

Almost surely, 2^40142403 is an apocalyptic number.

40142403 is a deficient number, since it is larger than the sum of its proper divisors (27745053).

40142403 is a wasteful number, since it uses less digits than its factorization.

40142403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15595 (or 15592 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40142403 is about 6335.8032639911. The cubic root of 40142403 is about 342.4005515165.

Adding to 40142403 its reverse (30424104), we get a palindrome (70566507).

The spelling of 40142403 in words is "forty million, one hundred forty-two thousand, four hundred three".