40142377 has 4 divisors (see below), whose sum is σ = 43791696. Its totient is φ = 36493060.

The previous prime is 40142357. The next prime is 40142387. The reversal of 40142377 is 77324104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40142377 - 2¹⁵ = 40109609 is a prime.

It is a super-2 number, since 2×40142377² = 3222820862420258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40142357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824643 + ... + 1824664.

It is an arithmetic number, because the mean of its divisors is an integer number (10947924).

Almost surely, 2^40142377 is an apocalyptic number.

It is an amenable number.

40142377 is a deficient number, since it is larger than the sum of its proper divisors (3649319).

40142377 is a wasteful number, since it uses less digits than its factorization.

40142377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649318.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 40142377 is about 6335.8012121594. The cubic root of 40142377 is about 342.4004775929.

It can be divided in two parts, 401 and 42377, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 40142377 in words is "forty million, one hundred forty-two thousand, three hundred seventy-seven".