211513042 has 16 divisors (see below), whose sum is σ = 341940312. Its totient is φ = 97545600.

The previous prime is 211513033. The next prime is 211513051. The reversal of 211513042 is 240315112.

It is an interprime number because it is at equal distance from previous prime (211513033) and next prime (211513051).

It can be written as a sum of positive squares in 4 ways, for example, as 34117281 + 177395761 = 5841^2 + 13319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44568 + ... + 49084.

Almost surely, 2^211513042 is an apocalyptic number.

211513042 is a deficient number, since it is larger than the sum of its proper divisors (130427270).

211513042 is a wasteful number, since it uses less digits than its factorization.

211513042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 211513042 is about 14543.4879585332. The cubic root of 211513042 is about 595.8163048888.

Adding to 211513042 its reverse (240315112), we get a palindrome (451828154).

The spelling of 211513042 in words is "two hundred eleven million, five hundred thirteen thousand, forty-two".