403040142 has 12 divisors (see below), whose sum is σ = 873253680. Its totient is φ = 134346708.

The previous prime is 403040129. The next prime is 403040167. The reversal of 403040142 is 241040304.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22391119 = 403040142 / (4 + 0 + 3 + 0 + 4 + 0 + 1 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11195542 + ... + 11195577.

It is an arithmetic number, because the mean of its divisors is an integer number (72771140).

Almost surely, 2^403040142 is an apocalyptic number.

403040142 is an abundant number, since it is smaller than the sum of its proper divisors (470213538).

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

403040142 is a wasteful number, since it uses less digits than its factorization.

403040142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22391127 (or 22391124 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 403040142 is about 20075.8596827135. The cubic root of 403040142 is about 738.6682536429.

Adding to 403040142 its reverse (241040304), we get a palindrome (644080446).

The spelling of 403040142 in words is "four hundred three million, forty thousand, one hundred forty-two".