40142043 has 12 divisors (see below), whose sum is σ = 58778200. Its totient is φ = 26394336.

The previous prime is 40142029. The next prime is 40142057. The reversal of 40142043 is 34024104.

It is an interprime number because it is at equal distance from previous prime (40142029) and next prime (40142057).

It is not a de Polignac number, because 40142043 - 2⁶ = 40141979 is a prime.

It is a super-2 number, since 2×40142043² = 3222767232427698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40142023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29893 + ... + 31206.

Almost surely, 2^40142043 is an apocalyptic number.

40142043 is a deficient number, since it is larger than the sum of its proper divisors (18636157).

40142043 is a wasteful number, since it uses less digits than its factorization.

40142043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61178 (or 61175 counting only the distinct ones).

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

The square root of 40142043 is about 6335.7748539543. The cubic root of 40142043 is about 342.3995279558.

Adding to 40142043 its reverse (34024104), we get a palindrome (74166147).

The spelling of 40142043 in words is "forty million, one hundred forty-two thousand, forty-three".