400142345053 has 4 divisors (see below), whose sum is σ = 436518921888. Its totient is φ = 363765768220.

The previous prime is 400142345041. The next prime is 400142345081. The reversal of 400142345053 is 350543241004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400142345053 is a prime.

It is a super-2 number, since 2×400142345053² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400142343053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18188288401 + ... + 18188288422.

It is an arithmetic number, because the mean of its divisors is an integer number (109129730472).

Almost surely, 2^400142345053 is an apocalyptic number.

It is an amenable number.

400142345053 is a deficient number, since it is larger than the sum of its proper divisors (36376576835).

400142345053 is a wasteful number, since it uses less digits than its factorization.

400142345053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36376576834.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 400142345053 its reverse (350543241004), we get a palindrome (750685586057).

The spelling of 400142345053 in words is "four hundred billion, one hundred forty-two million, three hundred forty-five thousand, fifty-three".