400012102 has 16 divisors (see below), whose sum is σ = 693442080. Its totient is φ = 169507008.

The previous prime is 400012087. The next prime is 400012103. The reversal of 400012102 is 201210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400012103) 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, 159273 + ... + 161764.

It is an arithmetic number, because the mean of its divisors is an integer number (43340130).

Almost surely, 2^400012102 is an apocalyptic number.

400012102 is a deficient number, since it is larger than the sum of its proper divisors (293429978).

400012102 is a wasteful number, since it uses less digits than its factorization.

400012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321135.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 400012102 is about 20000.3025477116. The cubic root of 400012102 is about 736.8137303447.

Adding to 400012102 its reverse (201210004), we get a palindrome (601222106).

The spelling of 400012102 in words is "four hundred million, twelve thousand, one hundred two".