421440124011 has 4 divisors (see below), whose sum is σ = 561920165352. Its totient is φ = 280960082672.

The previous prime is 421440123989. The next prime is 421440124033. The reversal of 421440124011 is 110421044124.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (421440123989) and next prime (421440124033).

It is a cyclic number.

It is not a de Polignac number, because 421440124011 - 2¹³ = 421440115819 is a prime.

It is a super-2 number, since 2×421440124011² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421440124081) 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, 70240020666 + ... + 70240020671.

It is an arithmetic number, because the mean of its divisors is an integer number (140480041338).

Almost surely, 2^421440124011 is an apocalyptic number.

421440124011 is a deficient number, since it is larger than the sum of its proper divisors (140480041341).

421440124011 is a wasteful number, since it uses less digits than its factorization.

421440124011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140480041340.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 421440124011 its reverse (110421044124), we get a palindrome (531861168135).

The spelling of 421440124011 in words is "four hundred twenty-one billion, four hundred forty million, one hundred twenty-four thousand, eleven".