340021021243424 has 24 divisors (see below), whose sum is σ = 669417125621328. Its totient is φ = 170010322672960.

The previous prime is 340021021243279. The next prime is 340021021243429. The reversal of 340021021243424 is 424342120120043.

It is a happy number.

It is a super-2 number, since 2×340021021243424² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (340021021243429) 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, 26223179 + ... + 36982389.

It is an arithmetic number, because the mean of its divisors is an integer number (27892380234222).

Almost surely, 2^{340021021243424} is an apocalyptic number.

It is an amenable number.

340021021243424 is a deficient number, since it is larger than the sum of its proper divisors (329396104377904).

340021021243424 is a wasteful number, since it uses less digits than its factorization.

340021021243424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11746808 (or 11746800 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 340021021243424 its reverse (424342120120043), we get a palindrome (764363141363467).

The spelling of 340021021243424 in words is "three hundred forty trillion, twenty-one billion, twenty-one million, two hundred forty-three thousand, four hundred twenty-four".