40212042 has 16 divisors (see below), whose sum is σ = 86610720. Its totient is φ = 12372912.

The previous prime is 40212041. The next prime is 40212043. The reversal of 40212042 is 24021204.

It is an interprime number because it is at equal distance from previous prime (40212041) and next prime (40212043).

It is not an unprimeable number, because it can be changed into a prime (40212041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257692 + ... + 257847.

It is an arithmetic number, because the mean of its divisors is an integer number (5413170).

Almost surely, 2^40212042 is an apocalyptic number.

40212042 is an abundant number, since it is smaller than the sum of its proper divisors (46398678).

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

40212042 is a wasteful number, since it uses less digits than its factorization.

40212042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515557.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40212042 is about 6341.2965551218. The cubic root of 40212042 is about 342.5984358406.

Adding to 40212042 its reverse (24021204), we get a palindrome (64233246).

It can be divided in two parts, 4021204 and 2, that multiplied together give a palindrome (8042408).

The spelling of 40212042 in words is "forty million, two hundred twelve thousand, forty-two".