40142776 has 16 divisors (see below), whose sum is σ = 75335040. Its totient is φ = 20053440.

The previous prime is 40142749. The next prime is 40142777. The reversal of 40142776 is 67724104.

It is a super-2 number, since 2×40142776² = 3222884929972352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142777) 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, 15700 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (4708440).

Almost surely, 2^40142776 is an apocalyptic number.

It is an amenable number.

40142776 is a deficient number, since it is larger than the sum of its proper divisors (35192264).

40142776 is a wasteful number, since it uses less digits than its factorization.

40142776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4494 (or 4490 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 40142776 is about 6335.8326998114. The cubic root of 40142776 is about 342.4016120328.

The spelling of 40142776 in words is "forty million, one hundred forty-two thousand, seven hundred seventy-six".