137241221402 has 4 divisors (see below), whose sum is σ = 205861832106. Its totient is φ = 68620610700.

The previous prime is 137241221393. The next prime is 137241221431. The reversal of 137241221402 is 204122142731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 94309795801 + 42931425601 = 307099^2 + 207199^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34310305349 + ... + 34310305352.

Almost surely, 2^137241221402 is an apocalyptic number.

137241221402 is a deficient number, since it is larger than the sum of its proper divisors (68620610704).

137241221402 is an equidigital number, since it uses as much as digits as its factorization.

137241221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68620610703.

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 137241221402 in words is "one hundred thirty-seven billion, two hundred forty-one million, two hundred twenty-one thousand, four hundred two".