400412043002 has 4 divisors (see below), whose sum is σ = 600618064506. Its totient is φ = 200206021500.

The previous prime is 400412042999. The next prime is 400412043019. The reversal of 400412043002 is 200340214004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 319994993761 + 80417049241 = 565681^2 + 283579^2 .

It is a super-3 number, since 3×400412043002³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100103010749 + ... + 100103010752.

Almost surely, 2^400412043002 is an apocalyptic number.

400412043002 is a deficient number, since it is larger than the sum of its proper divisors (200206021504).

400412043002 is a wasteful number, since it uses less digits than its factorization.

400412043002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200206021503.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 400412043002 its reverse (200340214004), we get a palindrome (600752257006).

The spelling of 400412043002 in words is "four hundred billion, four hundred twelve million, forty-three thousand, two".