138241470 has 16 divisors (see below), whose sum is σ = 331779600. Its totient is φ = 36864384.

The previous prime is 138241469. The next prime is 138241471. The reversal of 138241470 is 74142831.

It is an interprime number because it is at equal distance from previous prime (138241469) and next prime (138241471).

It is a super-2 number, since 2×138241470² = 38221408055521800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4608049 = 138241470 / (1 + 3 + 8 + 2 + 4 + 1 + 4 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138241471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303995 + ... + 2304054.

It is an arithmetic number, because the mean of its divisors is an integer number (20736225).

Almost surely, 2^138241470 is an apocalyptic number.

138241470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138241470 is an abundant number, since it is smaller than the sum of its proper divisors (193538130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138241470 is a wasteful number, since it uses less digits than its factorization.

138241470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608059.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 138241470 is about 11757.6132782125. The cubic root of 138241470 is about 517.0661583668.

The spelling of 138241470 in words is "one hundred thirty-eight million, two hundred forty-one thousand, four hundred seventy".