40142234 has 12 divisors (see below), whose sum is σ = 66185322. Its totient is φ = 18246360.

The previous prime is 40142213. The next prime is 40142251. The reversal of 40142234 is 43224104.

It can be written as a sum of positive squares in only one way, i.e., 30858025 + 9284209 = 5555^2 + 3047^2 .

It is a super-2 number, since 2×40142234² = 3222797901021512, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82697 + ... + 83180.

Almost surely, 2^40142234 is an apocalyptic number.

40142234 is a deficient number, since it is larger than the sum of its proper divisors (26043088).

40142234 is a wasteful number, since it uses less digits than its factorization.

40142234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165901 (or 165890 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40142234 is about 6335.7899270730. The cubic root of 40142234 is about 342.4000710124.

Adding to 40142234 its reverse (43224104), we get a palindrome (83366338).

The spelling of 40142234 in words is "forty million, one hundred forty-two thousand, two hundred thirty-four".