137241491 has 2 divisors, whose sum is σ = 137241492. Its totient is φ = 137241490.

The previous prime is 137241487. The next prime is 137241499. The reversal of 137241491 is 194142731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137241491 - 2² = 137241487 is a prime.

It is not a weakly prime, because it can be changed into another prime (137241499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68620745 + 68620746.

It is an arithmetic number, because the mean of its divisors is an integer number (68620746).

Almost surely, 2^137241491 is an apocalyptic number.

137241491 is a deficient number, since it is larger than the sum of its proper divisors (1).

137241491 is an equidigital number, since it uses as much as digits as its factorization.

137241491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 137241491 is about 11715.0113529608. The cubic root of 137241491 is about 515.8163957774.

The spelling of 137241491 in words is "one hundred thirty-seven million, two hundred forty-one thousand, four hundred ninety-one".