1421252357745 has 32 divisors (see below), whose sum is σ = 2547778193280. Its totient is φ = 670467939840.

The previous prime is 1421252357717. The next prime is 1421252357747. The reversal of 1421252357745 is 5477532521241.

It is not a de Polignac number, because 1421252357745 - 2¹³ = 1421252349553 is a prime.

It is a super-2 number, since 2×1421252357745² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421252357694 and 1421252357703.

It is not an unprimeable number, because it can be changed into a prime (1421252357747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116394580 + ... + 116406789.

It is an arithmetic number, because the mean of its divisors is an integer number (79618068540).

Almost surely, 2^{1421252357745} is an apocalyptic number.

1421252357745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421252357745 is a deficient number, since it is larger than the sum of its proper divisors (1126525835535).

1421252357745 is a wasteful number, since it uses less digits than its factorization.

1421252357745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232801425.

The product of its digits is 2352000, while the sum is 48.

Adding to 1421252357745 its reverse (5477532521241), we get a palindrome (6898784878986).

The spelling of 1421252357745 in words is "one trillion, four hundred twenty-one billion, two hundred fifty-two million, three hundred fifty-seven thousand, seven hundred forty-five".