172420413 has 16 divisors (see below), whose sum is σ = 254539776. Its totient is φ = 102936240.

The previous prime is 172420337. The next prime is 172420427. The reversal of 172420413 is 314024271.

It is a happy number.

It is not a de Polignac number, because 172420413 - 2⁹ = 172419901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172420453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36781 + ... + 41202.

It is an arithmetic number, because the mean of its divisors is an integer number (15908736).

Almost surely, 2^172420413 is an apocalyptic number.

It is an amenable number.

172420413 is a deficient number, since it is larger than the sum of its proper divisors (82119363).

172420413 is a wasteful number, since it uses less digits than its factorization.

172420413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78064.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 172420413 is about 13130.8953617033. The cubic root of 172420413 is about 556.5825168715.

Adding to 172420413 its reverse (314024271), we get a palindrome (486444684).

The spelling of 172420413 in words is "one hundred seventy-two million, four hundred twenty thousand, four hundred thirteen".