146421511237 has 4 divisors (see below), whose sum is σ = 146431986156. Its totient is φ = 146411036320.

The previous prime is 146421511231. The next prime is 146421511259. The reversal of 146421511237 is 732115124641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 732115124641 = 51229 ⋅14291029.

It can be written as a sum of positive squares in 2 ways, for example, as 56450908836 + 89970602401 = 237594^2 + 299951^2 .

It is a cyclic number.

It is not a de Polignac number, because 146421511237 - 2¹¹ = 146421509189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146421511196 and 146421511205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146421511231) 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, 5216464 + ... + 5244457.

It is an arithmetic number, because the mean of its divisors is an integer number (36607996539).

Almost surely, 2^146421511237 is an apocalyptic number.

It is an amenable number.

146421511237 is a deficient number, since it is larger than the sum of its proper divisors (10474919).

146421511237 is a wasteful number, since it uses less digits than its factorization.

146421511237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10474918.

The product of its digits is 40320, while the sum is 37.

Adding to 146421511237 its reverse (732115124641), we get a palindrome (878536635878).

The spelling of 146421511237 in words is "one hundred forty-six billion, four hundred twenty-one million, five hundred eleven thousand, two hundred thirty-seven".