400342322 has 4 divisors (see below), whose sum is σ = 600513486. Its totient is φ = 200171160.

The previous prime is 400342321. The next prime is 400342351. The reversal of 400342322 is 223243004.

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., 266962921 + 133379401 = 16339^2 + 11549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400342294 and 400342303.

It is not an unprimeable number, because it can be changed into a prime (400342321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100085579 + ... + 100085582.

Almost surely, 2^400342322 is an apocalyptic number.

400342322 is a deficient number, since it is larger than the sum of its proper divisors (200171164).

400342322 is a wasteful number, since it uses less digits than its factorization.

400342322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200171163.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400342322 is about 20008.5562197776. The cubic root of 400342322 is about 737.0164273018.

Adding to 400342322 its reverse (223243004), we get a palindrome (623585326).

The spelling of 400342322 in words is "four hundred million, three hundred forty-two thousand, three hundred twenty-two".