72103034 has 4 divisors (see below), whose sum is σ = 108154554. Its totient is φ = 36051516.

The previous prime is 72103033. The next prime is 72103067. The reversal of 72103034 is 43030127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43030127 = 7 ⋅6147161.

It can be written as a sum of positive squares in only one way, i.e., 63952009 + 8151025 = 7997^2 + 2855^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 72102997 and 72103015.

It is not an unprimeable number, because it can be changed into a prime (72103033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18025757 + ... + 18025760.

Almost surely, 2^72103034 is an apocalyptic number.

72103034 is a deficient number, since it is larger than the sum of its proper divisors (36051520).

72103034 is a wasteful number, since it uses less digits than its factorization.

72103034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36051519.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 72103034 is about 8491.3505404029. The cubic root of 72103034 is about 416.2151138747.

The spelling of 72103034 in words is "seventy-two million, one hundred three thousand, thirty-four".