421451202154000 has 40 divisors (see below), whose sum is σ = 1019069006813208. Its totient is φ = 168580480860800.

The previous prime is 421451202153997. The next prime is 421451202154001. The reversal of 421451202154000 is 451202154124.

It can be written as a sum of positive squares in 4 ways, for example, as 10616571022864 + 410834631131136 = 3258308^2 + 20269056^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×421451202154000² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421451202154001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105362798539 + ... + 105362802538.

Almost surely, 2^{421451202154000} is an apocalyptic number.

421451202154000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421451202154000 is an abundant number, since it is smaller than the sum of its proper divisors (597617804659208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421451202154000 is a wasteful number, since it uses less digits than its factorization.

421451202154000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210725601100 (or 210725601084 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 421451202154000 in words is "four hundred twenty-one trillion, four hundred fifty-one billion, two hundred two million, one hundred fifty-four thousand".