1420455525021 has 12 divisors (see below), whose sum is σ = 2209597483548. Its totient is φ = 874126476864.

The previous prime is 1420455524963. The next prime is 1420455525023. The reversal of 1420455525021 is 1205255540241.

1420455525021 is a `hidden beast` number, since 1 + 42 + 0 + 45 + 552 + 5 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 253601880921 + 1166853644100 = 503589^2 + 1080210^2 .

It is not a de Polignac number, because 1420455525021 - 2¹³ = 1420455516829 is a prime.

It is a super-3 number, since 3×1420455525021³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420455525023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6070322640 + ... + 6070322873.

It is an arithmetic number, because the mean of its divisors is an integer number (184133123629).

Almost surely, 2^{1420455525021} is an apocalyptic number.

It is an amenable number.

1420455525021 is a deficient number, since it is larger than the sum of its proper divisors (789141958527).

1420455525021 is a wasteful number, since it uses less digits than its factorization.

1420455525021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12140645532 (or 12140645529 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 1420455525021 in words is "one trillion, four hundred twenty billion, four hundred fifty-five million, five hundred twenty-five thousand, twenty-one".