136421510 has 64 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 49674240.

The previous prime is 136421497. The next prime is 136421521. The reversal of 136421510 is 15124631.

It is a super-2 number, since 2×136421510² = 37221656781360200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753620 + ... + 753800.

It is an arithmetic number, because the mean of its divisors is an integer number (4201470).

Almost surely, 2^136421510 is an apocalyptic number.

136421510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136421510 is a deficient number, since it is larger than the sum of its proper divisors (132472570).

136421510 is a wasteful number, since it uses less digits than its factorization.

136421510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 136421510 is about 11679.9619006228. The cubic root of 136421510 is about 514.7870549542.

The spelling of 136421510 in words is "one hundred thirty-six million, four hundred twenty-one thousand, five hundred ten".