40127742 has 12 divisors (see below), whose sum is σ = 86943480. Its totient is φ = 13375908.

The previous prime is 40127741. The next prime is 40127777. The reversal of 40127742 is 24772104.

It is a happy number.

It is a super-2 number, since 2×40127742² = 3220471356037128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40127741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1114642 + ... + 1114677.

It is an arithmetic number, because the mean of its divisors is an integer number (7245290).

Almost surely, 2^40127742 is an apocalyptic number.

40127742 is an abundant number, since it is smaller than the sum of its proper divisors (46815738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40127742 is a wasteful number, since it uses less digits than its factorization.

40127742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229327 (or 2229324 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 40127742 is about 6334.6461621783. The cubic root of 40127742 is about 342.3588620529.

Adding to 40127742 its reverse (24772104), we get a palindrome (64899846).

The spelling of 40127742 in words is "forty million, one hundred twenty-seven thousand, seven hundred forty-two".