137463421 has 2 divisors, whose sum is σ = 137463422. Its totient is φ = 137463420.

The previous prime is 137463401. The next prime is 137463427. The reversal of 137463421 is 124364731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113316025 + 24147396 = 10645^2 + 4914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137463421 is a prime.

It is a super-2 number, since 2×137463421² = 37792384226046482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137463427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68731710 + 68731711.

It is an arithmetic number, because the mean of its divisors is an integer number (68731711).

Almost surely, 2^137463421 is an apocalyptic number.

It is an amenable number.

137463421 is a deficient number, since it is larger than the sum of its proper divisors (1).

137463421 is an equidigital number, since it uses as much as digits as its factorization.

137463421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 137463421 is about 11724.4795620104. The cubic root of 137463421 is about 516.0942842455.

The spelling of 137463421 in words is "one hundred thirty-seven million, four hundred sixty-three thousand, four hundred twenty-one".