402010042 has 8 divisors (see below), whose sum is σ = 689160096. Its totient is φ = 172290012.

The previous prime is 402010027. The next prime is 402010061. The reversal of 402010042 is 240010204.

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

It is a super-2 number, since 2×402010042² = 323224147737683528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14357488 + ... + 14357515.

It is an arithmetic number, because the mean of its divisors is an integer number (86145012).

Almost surely, 2^402010042 is an apocalyptic number.

402010042 is a deficient number, since it is larger than the sum of its proper divisors (287150054).

402010042 is a wasteful number, since it uses less digits than its factorization.

402010042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28715012.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 402010042 is about 20050.1880789184. The cubic root of 402010042 is about 738.0384145318.

Adding to 402010042 its reverse (240010204), we get a palindrome (642020246).

The spelling of 402010042 in words is "four hundred two million, ten thousand, forty-two".