400142343430 has 32 divisors (see below), whose sum is σ = 744951271680. Its totient is φ = 154589439360.

The previous prime is 400142343409. The next prime is 400142343431. The reversal of 400142343430 is 34343241004.

It is a super-2 number, since 2×400142343430² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400142343431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1110169 + ... + 1425748.

It is an arithmetic number, because the mean of its divisors is an integer number (23279727240).

Almost surely, 2^400142343430 is an apocalyptic number.

400142343430 is a deficient number, since it is larger than the sum of its proper divisors (344808928250).

400142343430 is a wasteful number, since it uses less digits than its factorization.

400142343430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536464.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 400142343430 its reverse (34343241004), we get a palindrome (434485584434).

The spelling of 400142343430 in words is "four hundred billion, one hundred forty-two million, three hundred forty-three thousand, four hundred thirty".