402105142 has 8 divisors (see below), whose sum is σ = 608691600. Its totient is φ = 199207944.

The previous prime is 402105133. The next prime is 402105149. The reversal of 402105142 is 241501204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402105149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922042 + ... + 922477.

It is an arithmetic number, because the mean of its divisors is an integer number (76086450).

Almost surely, 2^402105142 is an apocalyptic number.

402105142 is a deficient number, since it is larger than the sum of its proper divisors (206586458).

402105142 is a wasteful number, since it uses less digits than its factorization.

402105142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844630.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 402105142 is about 20052.5594875068. The cubic root of 402105142 is about 738.0966070412.

Adding to 402105142 its reverse (241501204), we get a palindrome (643606346).

The spelling of 402105142 in words is "four hundred two million, one hundred five thousand, one hundred forty-two".