402039040454 has 8 divisors (see below), whose sum is σ = 603254177640. Its totient is φ = 200954314576.

The previous prime is 402039040441. The next prime is 402039040471. The reversal of 402039040454 is 454040930204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×402039040454² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32595119 + ... + 32607450.

It is an arithmetic number, because the mean of its divisors is an integer number (75406772205).

Almost surely, 2^402039040454 is an apocalyptic number.

402039040454 is a deficient number, since it is larger than the sum of its proper divisors (201215137186).

402039040454 is a wasteful number, since it uses less digits than its factorization.

402039040454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65205654.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 402039040454 its reverse (454040930204), we get a palindrome (856079970658).

The spelling of 402039040454 in words is "four hundred two billion, thirty-nine million, forty thousand, four hundred fifty-four".